Bob Ociepka and Buck Williams, with Bickerstaff assuming the lead assistant coach position due to the departure of Monty Williams. The Blazers acquired rookies Armon Johnson, Luke Babbitt, and Elliot Williams from the 2010 NBA draft and off-season trades. On July 21, Wesley Matthews signed a five-year deal with the Blazers after his former team, the Utah Jazz, declined to match Portland's offer. Similar to the previous season, Portland was overcome with injuries from the start of the 2010–11 season. Jeff Pendergraph and rookie guard Elliot Williams both suffered knee injuries that sidelined them for the season; Portland later waived Pendergraph. In November, they announced that Oden would have microfracture surgery on his left knee, ending his 2010–2011 season. This injury marked Oden's third NBA season cut short due to a knee injury. Three-time All-Star Brandon Roy underwent double-arthroscopic surgery on January 17, 2011, to repair both knees after dealing with constant struggles, leaving his future up in the air. Just days after, Marcus Camby also underwent arthroscopic knee surgery to repair his left knee. Despite struggles with injury, Portland performed at a playoff level throughout the season. LaMarcus Aldridge emerged as the focal point of the team and posted career-high numbers, as well as Western Conference Player of the Week and Month honors. Wesley Matthews also emerged in the absence of Brandon Roy, proving his worth as the Blazers' key off-season addition. Believing the team could make a significant run in the playoffs, Cho executed his first major trade on February 24, 2011, just seven minutes before the deadline. The Trail Blazers sent forward Dante Cunningham, center Joel Przybilla and center Sean Marks to the Charlotte Bobcats in return for former All-Star and All-Defensive forward Gerald Wallace. The emergence of Aldridge and the play of Matthews kept the Blazers competitive, sealing another playoff berth by winning 48 games. However, like in their last two postseasons, the Blazers were eliminated in six games of the first round, this time against the eventual champions, the Dallas Mavericks. During the 2011 off-season, the Blazers released Cho, reportedly due to communication and "chemistry issues" with owner Paul Allen. Director of Scouting Chad Buchanan took over as acting interim General Manager. The dismissal of Cho was criticized by Sports Illustrated as "illogical", although they noted that Allen had done a lot of questionable moves during his tenure as team owner. On June 23, 2011,