NEW YORK -- The Brooklyn Nets say Jeremy Lin will miss at least three more weeks because of a hamstring injury that has sidelined him for most of the season.

Jeremy Lin, who has played in just 12 games for Brooklyn this season, is expected to miss at least another three weeks do to a hamstring injury. Troy Taormina/USA TODAY Sports

General manager Sean Marks said Monday that Lin aggravated his left hamstring during his rehab and that the point guard could miss approximately three to five weeks.

"Although this is the least severe of the three, this third injury has been a hard one to deal with mentally," Lin wrote on His Facebook page. "There's something so draining about the yo-yo effect of going from injured to healthy to injured to healthy that in some ways it would have been easier to have an injury where I knew from the beginning I would be out for a long, set amount of time."

"People may ask if I rushed back," Lin added. "I can confidently say I didn't. I checked every single check box that needed to be checked before returning and progressed carefully through my rehabs. The reality is that even when we plan for things to go a certain way, sometimes God has other plans."

Lin was first injured Nov. 2, just five games into the season, then strained the hamstring again on Dec. 26 against Charlotte. He has played in just 12 of Brooklyn's 43 games.

The Nets signed Lin to a three-year deal in July. Marks said the Nets appreciate Lin's desire to return, but that the team is "going to be cautious with his rehab in order to ensure that he is at full strength once he returns."

Information from ESPN's Ohm Youngmisuk and The Associated Press was used in this report.