Allen (hamstring) is out for Monday's game against the Kings, and he's without a return timetable, Ronald Tillery of the Memphis Commercial Appeal reports. Allen sustained a left hamstring injury Friday, and he missed Sunday's game against San Antonio. With the playoffs approaching, the Grizzlies won't rush Allen back, so expect Vince Carter and Courtney Lee to continue to pick up some extra minutes in the short-term. It sounds like Allen could miss a few more games, but until official confirmation is handed down by the team, consider him day-to-day. After Monday, Memphis' next game doesn't come until Friday versus Oklahoma City.