F Amir Johnson returned to the Boston lineup after sitting out Wednesday against Washington because of a sprained ankle.

F Amir Johnson (ankle) did not play Wednesday against Washington, and he is doubtful for the Friday game at Atlanta.

F Amir Johnson added 17 points for Boston (17-13).

F Amir Johnson, a veteran who makes his living near the basket, hit his first four 3-pointers of the season in a 16-point third quarter that seemingly put Boston in control. He finished with 23 points and six rebounds.Johnson was 0-for-1 from 3-point range in the first three games of the season and had made 58 treys in his 12-year career before Wednesday.

F Amir Johnson had his contract option picked up by the Celtics on Thursday. The Celtics guaranteed the contract of Johnson at $12 million.

President of basketball operations Danny Ainge insisted the Boston Celtics weren't finished this offseason after picking up the contract options of veteran forwards in Amir Johnson and Jonas Jerebko on Thursday.The Celtics guaranteed the contracts of Johnson and Jerebko at $12 million and $5 million next season, respectively, moves that bring their roster to 13, but Ainge is still searching for upgrades after losing out on prized free agent forward Kevin Durant on Monday."We are still looking at doing deals, and we're certainly not finished for the summer," Ainge told the Boston Globe in Salt Lake City, where the Celtics are participating in the Utah Jazz Summer League.Ainge added that the Celtics' biggest needs were outside shooting and help inside at the center position.Boston met with Durant in the Hamptons over the holiday weekend, but the former NBA MVP and four-time scoring champion opted to sign with the Golden State Warriors.However, the Celtics already signed one marquee free agent, former Atlanta Hawks center Al Horford, to a four-year, $113 million deal.Ainge also said that center Ante Zizic, whom Boston selected at No. 23 overall in this year's draft, will return to Croatia for the 2016 season.Guerschon Yabusele, the team's No. 16 overall pick, is also likely to return to France next season, but the decision hasn't been finalized.

F Amir Johnson had 14 points and eight rebounds for the Celtics on Tuesday in a loss at Atlanta.

F Amir Johnson had 10 points and 13 rebounds Sunday.

F Amir Johnson is quietly leading the Celtics up front. Clearly over the back problems that were bothering him, Johnson has produced 40 points and 33 rebounds in the past three games, notching his sixth and seven double-doubles of the season the past two. He is 19-for-22 from the floor and has blocked seven shots in the three games, all Celtics victories. He had 11 points and 14 rebounds against his old team, Toronto, on Wednesday night.

F Amir Johnson had 11 points and 11 rebounds and blocked three shots in his sixth double-double of the season.

F Amir Johnson hit nine of 10 shots and scored 18 points while grabbing eight rebounds Sunday at Philadelphia.

F Amir Johnson had 11 points, 12 rebounds and five assists Wednesday in the Celtics' loss to the Thunder.

F Amir Johnson had 15 points and eight boards Thursday. Johnson, who has been bothered by back trouble, had totaled 10 points and seven rebounds in the previous four games.

PF Amir Johnson was a non-factor again on Monday, scoring two points in just 15 minutes for the Celtics against Minnesota. Since scoring in double figures in seven-straight games in early January, Johnson has failed to reach at least 10 points in 18 consecutive games and has seen his points per game average tumble to 7.4. After routinely playing 25 minutes per night early in the season, Johnson has surpassed that plateau just four times since Jan. 16.

F Amir Johnson played 13 minutes Wednesday but was largely on the bench with a wrap around his sore back.

F Amir Johnson was out of the Boston lineup Friday for personal reasons, and the hope is he will rejoin the team in Philadelphia.

F Amir Johnson returned to Air Canada Center for the first time since signing with the Celtics as a free agent in July. He spent six seasons in Toronto. "Great fan base," he said of Toronto. "I always said it's not just the city; we had the whole country behind us. It was pretty cool going on a couple runs and having the country cheering for us."

F Amir Johnson scored 13 points for the Celtics Friday.

F Amir Johnson had 16 points for the Celtics, who lost their second straight. Johnson also had 11 rebounds.

F Amir Johnson (plantar fasciitis) and Fs Jared Sullinger (back spasms) both sat out the Monday game against Minnesota.