Just days after signing a contract extension with the Boston Bruins, center David Krejci today underwent successful hip surgery, according to a statement issued by general manager Peter Chiarelli.

According to the statement, “The surgery was performed by Dr. Bryan T. Kelly at the Hospital for Special Surgery in New York City, and will force Krejci to miss approximately four to six months.”

So if you do the math, there’s a chance Krejci could be available when the Bruins open their regular season in early October. The 23-year-old set a career high with 73 points in just his second full NHL season and emerged as the Bruins’ No. 2 center and a force on both the power play and penalty kill.