Baseball’s premier starters when it comes to fastball velocity will be on display in Tuesday night's games.

You might know that New York Mets starter Noah Syndergaard owns 10 of the top 13 games with the fastest average fastball velocity this season. But you might not have known that Seattle Mariners left-hander James Paxton has two of the other three.

Highest Avg Fastball Velocity 2016 Season Noah Syndergaard 98.1 Nate Eovaldi 96.9 Carlos Martinez 95.7 Yordano Ventura 95.4 Stephen Strasburg 95.0

Syndergaard will pitch against a Royals team that he defeated in the 2015 World Series and again on this season on April 5. Paxton will take on a potent Tigers lineup.

Syndergaard leads starters with an average fastball velocity of 98.1 mph this season. Paxton has made four starts, so he doesn’t qualify, but he has averaged 97.5 mph. Paxton is making a good move toward Syndergaard. In just four starts, he has thrown the fourth-most pitches of 98 mph or faster among starters (134).

Syndergaard, Paxton and Nathan Eovaldi are the only pitchers to average at least 98 mph in a start this season.

Syndergaard and Paxton have taken different steps to get to this point. Syndergaard’s 97.0 mph fastball average was best among pitchers with at least 20 starts last season.

Paxton, on the other hand, never posted an average fastball velocity for a game above 94.8 mph until this season. In fact, his fastest pitch in his career was 99.2 mph entering 2016. This season he has thrown 27 pitches faster than that.

Syndergaard leads the majors with 37 strikeouts on pitches 98 mph and faster. In his four starts, Paxton has tied Carlos Martinez for second on that list, with 11.

Last season, no starter had more than 40 strikeouts on pitches that fast -- and the one with 40 was Syndergaard himself, with 17 more than those second on the list (Matt Harvey and Gerrit Cole).

Syndergaard supports his fastball with a slider that averages 91.3 mph, the fastest of any qualified starter. Paxton, whose slider averages 90.1 mph, is the only other starter with at least 50 sliders thrown to 90 mph or above. The pitch serves as a putaway pitch for both; opponents are hitting .139 against Syndergaard’s slider and .211 against Paxton’s.

Batters are hitting .268 on Syndergaard’s fastball and .317 on Paxton’s, but for both, the value is in throwing strikes. Syndergaard gets strikes with it 72 percent of the time, the fourth-highest rate among starting pitchers (and second-highest behind Max Scherzer if you take out knuckleballers R.A. Dickey and Steven Wright). Paxton has thrown it for a strike 68 percent of the time, 6 percentage points higher than he did in 2014 and 2015.

There is one area in which Paxton has the edge on Syndergaard. Paxton has a higher swing-and-miss rate on fastballs of 98 mph or faster (22 percent) than Syndergaard (20 percent), but Syndergaard gets batters to chase pitches out of the zone more frequently more(34 percent to 24 percent).