LA Lakers guard Gabe Vincent did not play on Monday against the Portland Trail Blazers. The veteran guard sprained his left ankle in the Lakers’ 127-120 win against the Sacramento Kings less than 24 hours ago.Following more tests, NBA insider Shams Charania has bad news for Laker Nation:“Lakers guard Gabe Vincent is expected to miss 2 to 4 weeks after undergoing an MRI on his sprained left ankle, sources tell me and @mcten.”Gabe Vincent left the game against the Kings early in the third quarter after spraining his left ankle. Amid the hoopla of Austin Reaves' 51-point explosion, Vincent's injury became an afterthought. ESPN's Dave McMenamin tweeted after the game that the veteran guard wore a walking boot inside the Lakers' locker room. According to the NBA insider, Vincent told him that X-ray results were negative. However, the MRI on Monday confirmed what some speculated. A week into the season, the Lakers are already dealing with injuries to key players. Lakers coach JJ Redick planned to give Vincent a bump in playing time after Luka Doncic went down with left finger and lower leg injuries. Vincent’s absence is especially challenging for a team still searching for rhythm and consistency.Gabe Vincent's injury hobbles Lakers even moreLuka Doncic, who did not play against the Sacramento Kings on Sunday, will be re-evaluated in one week. LeBron James still has not played this season. The four-time MVP is reportedly targeting mid-November as his first appearance for the team. The Lakers also put Marcus Smart on the inactive list for Monday's game against the Portland Trail Blazers due to a right quad contusion.LA's lineup, particularly its backcourt, has now been decimated. After Austin Reaves, JJ Redick's choices include Bronny James and Chris Manon, a player on a two-way contract. Reaves is the only lead guard on the roster who can run the offense and create opportunities for teammates.Against the Blazers, Redick rolled out a starting lineup of Reaves, Jake LaRavia, Jarred Vanderbilt, Rui Hachimura and Deandre Ayton. LA is putting up a good fight, but against better and stronger opponents, the team could struggle without multiple key playmakers.