Hamilton tore the plantar fascia in his left foot in a win over the Philadelphia 76ers on Saturday. He is out for an indefinite amount of time.
"I just think it fits best right now," Bulls coach Tom Thibodeau said of the move. "Nothing's etched in stone, but he's played well and Jimmy (Butler's) played well coming off the bench. We'll see how it goes."
Thibodeau acknowledged that one of the reasons behind elevating Belinelli is because he is comfortable with Butler coming in with the second unit, usually alongside Taj Gibson.
"That group's played really well together, and they're starting to build some chemistry," Thibodeau said. "So that was a big part of it."
Whether Belinelli is starting or coming off the bench, both players will play more minutes than usual as Hamilton recovers. Thibodeau also noted that he may decide to shift veteran guard Kirk Hinrich over to the two spot at some point, which would likely give Nate Robinson even more minutes.
"A lot of it will be based on matchups, too," Thibodeau said.
Belinelli is just happy to get the opportunity. He has struggled badly at times this season, but said he feels "a lot" more comfortable in Thibodeau's system.
"I remember the first time (I came here) I was nervous about my defense, about my offense, too," Belinelli said. "A lot of plays, everything, new guy on the team. But right now I'm good. , I love the team, I love coach, I love the organization, I love the fans, so it's just perfect. I'm going to try and do my best to win the game."