draft, when Thompson's former collegiate teammate Jordan Hamilton went 26th overall to the Dallas Mavericks. During the 2011 NBA lockout, Thompson attended classes at the University of Texas to finish his college degree. Thompson signed his rookie contract with the Cavaliers on December 9, 2011, before the start of training camp. Thompson made his professional debut against his hometown Toronto Raptors on December 26, 2011. In 17 minutes off the bench, Thompson scored 12 points and pulled in 5 rebounds. Both Thompson and teammate Kyrie Irving were later named to the 2012 Rising Stars Challenge. However, Thompson was selected to play for Team Shaq, while Irving was selected by Team Chuck. Thompson finished the season with averages of 8.2 points and 6.5 rebounds in 60 games as he earned NBA All-Rookie Second Team honors, becoming the first Canadian to ever earn All-Rookie team honors in the NBA. 2012–13 season In the 2012–13 season, Thompson worked on avoiding getting his own shots blocked, and switched his shooting hand from left to right. For most of the season, almost 17%, or one out of six, of his shots were blocked, threatening former NBA player Danny Fortson's 16.7% rate in 1997–98. Thompson dropped to around 15% by season's end, which was only reached by three other players before the season. He went on to average 3.7 offensive rebounds per game, which ranked fifth in the NBA and first among second year players, and set the Cavaliers franchise record for most offensive rebounds in a single season with 306 (second in the NBA), surpassing Zydrunas Ilgauskas' 299 offensive rebounds in the 2004–05 season. He also recorded a team-high 31 double-doubles on the season, becoming just the ninth player in franchise history to total at least 30 double-doubles in a single season. He started all 82 games in 2012–13 as he averaged 11.7 points on .488 shooting, 9.4 rebounds and 0.9 blocks in 31.3 minutes per game. 2013–14 season In the 2013 off-season, Thompson decided to switch his shooting hand to his right instead of his left. Despite the change, he had an almost identical season for the Cavaliers in 2013–14, as he started all 82 games while averaging 11.7 points and 9.2 rebounds in 31.6 minutes per game. He tied for fifth in the Eastern Conference with a team-leading and career-best 36 double-doubles. 2014–15 season During the 2014 off-season, the Cavaliers acquired All-Star forwards