The Knicks announced Monday that Robinson will undergo surgery on his left ankle and will be re-evaluated in 8-to-10 weeks.

This is a huge blow for the Knicks as they lose their starting center until at least early February. Robinson, who holds averages of 6.2 points, 10.3 rebounds and 1.3 blocks per game, left Friday's loss to Boston in the first half but briefly returned in the second half, finishing with 10 points and eight rebounds in 19 minutes. His fantasy managers will take a hit in boards and blocks while they wait for his return. In Robinson's absence, the Knicks will likely turn to Isaiah Hartenstein to step into Robinson's spot in the starting lineup. Jericho Sims hasn't been in the rotation much this season, but he could get a chance as the primary backup with Robinson out for the foreseeable future.