The purpose of this two-post series is to make a quick snapshot of where one analyst sees the Boston Bruins’ professional prospect depth chart stacking up after the 2016 NHL Entry Draft and this past week’s development camp. We’ll start with he professional players who are expected to be in Providence or in the North American and European pro ranks this season. On Monday, we’ll hit the amateur (NCAA and junior players).

Caveat up front- I did not personally attend development cam this year, so am basing my assessment on feedback from members of the Bruins organization, media and fans who were there in person to see the players. I have seen every prospect on the list, either on film or live, so the bulk of this assessment comes not from four days of on-ice drills and a 3-on-3 scrimmage, but from a season and in several cases, multiple years worth of evaluation. Note- I am only covering players aged 25 or under, so that takes Tommy Cross out of the mix on this list for those who might be wondering. Noel Acciari and Chris Casto just make the cut as December 1991-born players.

Here we go, and I’ve done an audio file to supplement the limited write-ups below, so for all you Bruins hockey junkies, there’s more content in this post than ever…tell your friends!

The Pros (AHL, ECHL or Europe)

Frank Vatrano, LW (East Longmeadow, Mass.) Plus: Put up mind-boggling numbers with 36 goals (55 points) in as many AHL games, while adding another eight goals in 39 NHL games with the big Bruins. The undrafted free agent turned himself into a sleek scoring machine as a rookie pro and is primed for a bigger Boston role this year. Minus: Without ideal NHL height, Frank the Tank will have to maintain a high-energy pace and work in all three zones to maximize his potential. Danton Heinen, RW Plus: After two high-end scoring years as a collegian, he put up a pair of assists in his second AHL game last spring; with his genius-level hockey IQ and slick hands, the 2014 fourth-rounder could earn an NHL job right away. Minus: He’s about 6-foot and not even 200 pounds, so he’s going to have his hands full with the increased speed and physicality of the pro game. Brandon Carlo, RD Plus: Like Heinen, Carlo’s on a positive trajectory at making the Bruins right away- he’s 6-5 and can really skate and move, already a beast in his own end, something Boston lacked down the stretch a year ago. Minus: Not all that instinctive in the offensive end; could stand to play a lot of minutes in more of a top role and on the power play to try and tease more offensive production and build confidence. Rob O’Gara, LD Plus: At 6-4 and north of 220 pounds, this premier shutdown/defensive mind can also skate extremely well for one so big- his speed and footwork has always been advanced, and the rest of his game has come along quite well in the five years since he was drafted in the fifth round. Minus: More of a “safe” prospect than one you would assign talk of high “upside” or “ceiling” to, O’Gara isn’t quite the physical specimen Carlo is (they’re close), but he may be a more complete defender when all is said and done. Colin Miller, RD Plus: “Chiller” has top-shelf skating, passing, shooting skills; showed off some offensive flair in his first NHL campaign, putting up a respectable 16 points in 42 games despite not having an overabundance of ice time/becoming a spare part in the season’s second half. Minus: The former LA Kings farmhand has a lot of work to do on the defensive side in terms of processing/making better decisions and improving his three-zone play. Austin Czarnik, C Plus: Dazzling offensive center impressed in his first rookie pro year with 50+ points to back up his tremendous speed, lightning-quick hands and ubermensch-worthy vision/hockey sense. Minus: At barely 5-8 (and that’s probably being charitable) the former Miami RedHawks captain wasn’t drafted, and will have to overcome size concerns at a position the Bruins are pretty deep at. Malcolm Subban, G Plus: The progress has been slower than expected, but there is no doubt that he’s one of the more dazzling athletic talents at the position and when healthy, has shown some major league promise. Minus: The fractured larynx was a significant setback, and if it hasn’t been one thing for Subban, it’s been another ( outplaying him in 2014-15)- this is the year that he proves his worth to Boston and justifies his selection in the 2012 first-round once and for all. Noel Acciari, C (Johnston, R.I.) Plus: Ace two-way center earned his way to Boston for a 19-game stint at the end of the year after being an undrafted free agent less than a year earlier; a good skater, superb faceoff man and intelligent, charismatic 24-year-old who plays the game hard, but clean- he’s got a lot in common with Patrice Bergeron, without the scoring. Minus: With just one NHL assist- there isn’t a whole lot of scoring in the well for the one-time captain of Providence College’s 2015 championship squad; as he turns 25 in Dec., there probably isn’t a whole lot of development left- he’s a solid, if unspectacular grinding bottom-line pivot. Matt Grzelcyk, LD (Charlestown, Mass.) Plus: When it comes to speed, sense, and spirit/heart- they aren’t built much better than the Townie, whose veins probably bleed black and gold; the former BU captain is an ultra-slick puck-moving defender who can push the pace and get the puck out of his own end with ease. Minus: At about 5-foot-10, Grzelcyk is going to have his hands full forcing his way into Boston’s top-six D rotation and might have to benefit from some luck and minors time to get there. Peter Cehlarik, RW Plus: Big-bodied Slovak plays the off-wing and signed with Boston after spending four years playing pro hockey in Sweden; he’s got a nice 6-foot-2 frame plus some offensive chops as a late third-round pick in 2013. Minus: He’s just an okay skater- he’s gotten better and can move pretty well in a straight line, but his first few steps and acceleration are clunky; he’s not great at the quick stops/starts/direction change and it will be interesting to see how he adapts to the smaller North American ice surface. Zane McIntyre, G Plus: When it comes to drive and character, they don’t come much better than the native of Thief River Falls, Minn. who once earned top goalie honors in that state- named for former Bruins great Frank Brimsek; whenever tested, the 2010 sixth-rounder has always responded with dramatic improvement and maturity beyond his years. Minus: It was a tough transition to pro hockey for the NCAA’s best goalie; he’s got technique issues to work through and will have to fend off fellow pro Daniel Vladar for internal crease competition. Seth Griffith, RW Plus: Despite the odds working against a smallish forward without dynamic wheels, the 2012 fifth-rounder has seen NHL action in each of the past two seasons; he’s a highly creative scoring mind with the superb puck skills to set up plays or finish them off. Minus: We so want to have Griffith higher on the list, but what is he at the NHL level? Scorer? Checking forward? We probably know the answer to the second question, so he’ll have to make it in the top-two lines- good luck. Daniel Vladar, G Plus: Huge (6-5), athletic and learning- he put up pretty nice numbers with the Chicago Steel of the USHL in his first North American season; very tough to beat on the first shot and improving his technique. Minus: After the B’s signed him to a 3-year ELC in the spring, where is the still quite raw Czech native going to play next year? ECHL? AHL? Europe? Clock is now ticking on his timeline. Linus Arnesson, D Plus: A bit of a forgotten man and 2013 second-rounder didn’t forget how to play- he’s got good size, can skate, make a clean first pass and is a smart, savvy defensive player even if he’s very much on the vanilla side of the red line. Minus: Nagging injuries kept Arnesson from getting out of second gear, and questions about his vision and ability to process the game well in the offensive aspects mean that at best, he’s probably a 4/5 at the NHL level assuming he ever gets there. Brian Ferlin, RW Plus: Looking for someone who can play the right side effectively and has enough size to drive through traffic and skill to make things happen around the net? Ferlin’s your guy. Minus: After a promising rookie pro season in 2014-15 that saw him see seven NHL games near the end, a concussion forced him out of most of this year- he’s got a lot of work ahead to put himself back to the fore. Sean Kuraly, C Plus: With his pro-style body (6-2, 210) and wide skating base, the Ohioan gets around the ice pretty well and has shown the potential to be a solid if unspectacular bottom-six option, either at center or more likely on the wing somewhere. Minus: There’s just not a whole lot to get excited about when it comes to Kuraly’s hands and creativity- when forced to carry more of an offensive load for Miami U. as a senior, he flamed out. Anton Blidh, LW Plus: You gotta love this energetic, abrasive little cuss of a Swedish forward who plays bigger than his size and stands out with his pure hustle and physical style. Minus: Unless you’re fine with him on Boston’s fourth line (which is A-OK) there’s simply not enough pure talent/ability in our view for much of an impact at the NHL level. Colby Cave, C Plus: Fine skater with a fine two-way hockey IQ and the raw leadership skills that will be an asset in any room. Minus: We just don’t see much in terms of high-level skill, so he’ll have to win a spot on the bottom lines while swimming in a pretty deep pool. Chris Casto, RD Plus: With his thick build and pretty quick feet to go with a bomb of a shot, Casto is a bit like Arnesson in that he’s not suited to ride around near the top of Boston’s prospect lists; he just spent three years in Providence after signing as an undrafted free agent out of Minnesota-Duluth and was qualified, so that speaks to the fact that the B’s saw something in him worth keeping around. Minus: Every team needs solid, safe, unspectacular players to feed their minor league farm teams and Casto might be that guy- unless the B’s get into a real pickle with injuries this season, it’s hard to envision him being seriously in the mix as a regular. Colton Hargrove, LW Plus: Put up surprising numbers in his first full AHL campaign; big, gritty power winger is heavy on the puck and finds ways to get dirty goals- one tough nut. Minus: There’s a lot of competition for bottom-six jobs and Hargrove needs to improve his foot speed and maintain his focus/drive. He’s getting there. Emil Johansson, LD Plus: Another Swede in the Boston system- he impressed at development camp after a real strong finish to the Swedish pro season with HV71; he skates well and moves the puck with gusto- something the B’s desperately need. Minus: Excelling at drills against amateurs when you’re playing pro hockey overseas is one thing, being able to process, read and react in the NHL is another- still not sold on the 2014 seventh-rounder’s ultimate big league potential. Justin Hickman, F Plus: Coming off shoulder surgery, it was a frustrating year for the Seattle Thunderbirds captain and power forward who was slow out of the gate and never recovered. Minus: Undrafted free agent just another physical forward in a sea of them, but could rebound and improve his stock with better health and more confidence after playing through a challenging rookie season. Oskar Steen, F Plus: Energetic and gritty; excellent skater who has a low center of gravity and powers through would-be checkers while taking pucks tot he net. Minus: He probably deserves a better fate than to be at the bottom of the list, but someone has to bring up the rear- reports said he showed quite nicely in drills at development camp but was not as noticeable in the scrimmage/replicated game situations. A 5-9 forward has to be better at that.