MEMPHIS, Tenn. (NBA.com exclusive) --  The Grizzlies began this season with the NBA's youngest active roster with an average age of 25 years and 91 days. Because of that, coach Lionel Hollins knows this is going to be a season filled with plenty of teaching opportunities.

Take for instance Friday night when the Grizzlies fell behind by eight points to Toronto early in the fourth quarter. Hollins quickly called a timeout, telling his team to quit playing selfish basketball.

The Grizzlies responded with eight unanswered points before taking the lead for good as they went on to win their first game of the season, 115-107, at FedExForum.

``It's just a lesson for these guys to understand that in order to be a good team, a winning team, and a team that competes, which we did tonight, you've got to do the right thing all the time,'' Hollins said. ``Every possession, defensively and offensively. You don't always do it right, but you've got to attempt to do it right. You've got to have a focus of doing it right. More often than not, good things will happen.''

Prior to the game, the Grizzlies also learned from their Opening Night, 96-74, blowout loss to Detroit in which they played uninspiring basketball in the final three quarters. Against Toronto, they had energy from start to finish in a game that was close throughout.

Even in the first half, when Toronto All-Star Chris Bosh torched the Grizzlies from all over the court, scoring 25 of his game-high 37 points, the Grizzlies still managed to hang tough.

Bosh, who also had 12 rebounds, scored almost at will as he forced Grizzlies' center Marc Gasol into three first-half fouls. Zach Randolph and Grizzlies rookie DeMarre Carroll also tried their hand at stopping Bosh, to no avail.

In the second half, the Grizzlies figured the best way to slow down Bosh was to make him work on the defensive end. Randolph and Gasol began taking their games into the post. Randolph led the Grizzlies with 30 points and seven boards (six offensive), while Gasold had 19 points and seven rebounds (four offensive).

``(Me and Gasol) kind of play similar games,'' Randolph said. ``I know where he likes it at. I'm a pretty good passer myself, and he is too.

After Bosh put Toronto up 90-88 with 7:36 to play, Randolph regained the lead for Memphis by converting a three-point play. A rebound dunk by Gasol pushed the Grizzlies lead to 95-91.

Toronto managed to pull to within 100-98 when Jose Calderon turned a Grizzlies turnover to a layup on the other end. But a 3-pointer by O.J. Mayo ignited a 7-0 Memphis run, capped by his steal and dunk with 1:43 remaining.

``I got the ball and happened to be on the wing,'' Mayo said of his first 3-pointer of the season. ``The guys kind of cleared out and the guy guarding me backed up. I got an opportunity to line the threads up and set my feet and I was like I'm going to take it. It's a shot I can make. If I missed, coach probably would have been mad, but I made it and it helped the team.''

Bosh said the Raptors, who began the season with an impressive win over Cleveland, made too many defensive mistakes to win their first road game of the season as the Grizzlies scored 39 points in the final quarter.

``We didn't do small, fundamental things on defense,'' he said. ``We didn't push the post off the block. Marc and Zach caught the ball pretty low, and we let them get into the paint. It just takes effort and wanting to do it down the stretch.''

The win couldn't have come at a better time for the Grizzlies, who embarck on a five-game road trip beginning Sunday night in Denver. From there, they make stops in Sacramento, Golden State and Los Angeles to face both the Lakers and Clippers.

The last thing the Grizzlies wanted to do was head on the road with an 0-2 record.

``I think we all understood it was a must-win type of game tonight,'' Mayo said. ``That's the kind of mentality we needed to have tonight. We didn't play nearly as well as we were capable of playing opening night. Before we go on the road trip we wanted to get some momentum and show our fans how we need to play in order to win.''

All five starters scored in double figures for Memphis. Mayo added 18, Rudy Gay 17 and point guard Mike Conley had 10 points, 10 assists and six rebounds. Carroll had career-highs of 12 points with seven boards off the bench. The Grizzlies shot 51.2 percent after shooting just 36 percent against Detroit.

Calderon chipped in with 15 points for Toronto, Hedo Turkoglu added 14 and Andrea Bargnani scored all 12 of his points in the third quarter.