Kidd, who is battling lower back spasms, did not travel with the team. He missed Monday night's game against the Brooklyn Nets and is considered day-to-day.
The Knicks would like to get Kidd back as soon as possible, Knicks coach Mike Woodson said Tuesday:
"Jason has been the common factor in terms of offensively getting us in things, defensively being a stabilizer based on who he's guarding and getting the other four guys in position," he said. "Jason does a lot of things that go unnoticed. He's not a stat guy, but when you watch the tape based on the things that he does on the floor, it's incredible. He just does things to help you win basketball games. So he was missed last night."
Kidd, 39, has been in the NBA since 1994. In his first season with the Knicks, he's averaging eight points and 3.4 assists per game. He's shooting 52 percent from the field.
Kidd's impressive career has spanned four different cities. In his 1,327 career games, he's started 1,314 of those. He's averaged 12.9 points, nine assists and 6.4 rebounds over the course of his career, which has included 10 All-Star games.
The Knicks (9-4) and Bucks (7-5) tip off at 8 p.m. ET on Wednesday.