Ronald Tillery

USA TODAY NETWORK – Tennessee

Microsoft can always be counted on to regularly roll out a new version of Windows. Bill Gates is on his 10th version.

In a way, the Grizzlies mimic the software giant this season given coach David Fizdale unveiled yet another operating system for fans to consume.

Introducing Grizzlies 4.0, in which Tony Allen officially is the backup point guard, Troy Daniels receives regular rotation minutes and rookie Andrew Harrison has a front-row seat to watch it all unfold.

Fizdale shortened the guard rotation because the Grizzlies have all but eliminated viruses to their program for the first time this season.

A healthy roster dictated the change as the Chicago Bulls will notice Sunday when they visit FedExForum at 8 p.m.

“I’m going to play with this for a little while and let (T.A.) be the backup one. I’ve been talking about this since I got here,” Fizdale said. “Now that we’re starting to get a full squad, and Troy Daniels being a guy I just have to find a way to play, Andrew is the guy who has to suffer. It’s nothing that Andrew did. I have great confidence in him. But right now, there’s just not enough minutes to go around and I’ve got to get Troy Daniels on the court.”

Indeed, the change shouldn’t be a shock to the Grizzlies’ system. Allen spent time during training camp practices at the point. The pressure to play Daniels needs no explanation.

But here goes: Since Nov. 30, Daniels ranks sixth in the NBA in 3-pointers (70) and is tied for third in three-point percentage (.443). The statistic applies to players with at least 15 games played and five-or-more three-point attempts per game.

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Daniels tends to get hot quickly when he enters games because of a no-conscious approach to shooting the basketball. Consider Daniels a major factor in the Grizzlies’ 18-0 record this season when shooting a higher field goal percentage than their opponents.

“Either way, is fine with me,” Daniels said. “That’s something I’ve been hanging my hat on; just staying ready but obviously, it helps to know when you’re playing. (Fizdale) sat me down and told me the rotation. It’s going to take time to get used to that. It’s obviously different but we’ll be fine.”

Harrison had proven to be serviceable behind Conley. The Grizzlies went 7-2 with Harrison as the starter when Conley was lost due to a back injury.

Allen, who tossed in a season-high 22 points in a win Friday at Houston, still will be required to defend the opponents’ best perimeter scorer at a high level. Allen is quick to point out that handling the basketball is nothing new given he was asked to backup Boston’s Rajon Rondo in 2010.

“I’ve got that under my belt,” Allen said. “Obviously, I want to get more comfortable with it. I’m a work in progress with that.”

The move not only allows for Daniels to get more than spot minutes as a flame thrower whenever the Griz fall behind by double-digits but Conley can play off the ball.

Conley said Allen is credible running the team.

“He made a lot of great decisions,” Conley said after the Houston win. “He has a lot on his plate. I’m proud of him stepping up the way that he did. I’m excited to see him do more.”

And this might not be the last adjustment Fizdale makes with the lineup.

Fizdale has already tightened his big man rotation, taking Jarell Martin out of the mix so that Zach Randolph can play longer stretches alongside Marc Gasol.

“It’s about figuring this team out now,” Fizdale said. “This is probably our fourth team that I’ve had to figure out. But it’s cool. I like it. It’s a good challenge for me as a young coach. I like the fact that I’m dealing with the problem of health and having guys back over the other way. I’m definitely going to tweak some lineups and see what fits.”

Grizzlies' next game

Who: Memphis vs. Chicago Bulls

When, where: 8 p.m. Sunday, FedExForum

TV, radio: ESPN; WMFS 92.9 FM/680 AM