The Los Angeles Lakers are facing a must-win situation tonight as they take on the Oklahoma City Thunder in Game 4 of the Western Conference semifinals. Down 3-0 in the series, the Purple and Gold are fighting to keep their playoff hopes alive—but they'll have to do it without their superstar.

Luka Doncic has been ruled out for tonight's game as he continues recovering from a Grade 2 left hamstring strain. The injury, sustained earlier in the postseason, is expected to keep him sidelined through late May, leaving the Lakers shorthanded in their most critical game of the season. It's a tough blow for a team that's already facing an uphill climb against a Thunder squad that has dominated every playoff game this spring—winning all seven by double digits.

Oklahoma City enters as heavy 11.5-point favorites, with oddsmakers expecting another commanding performance. The Thunder's depth and defensive intensity have been too much for the Lakers to handle so far, and they'll look to close out the series tonight at Crypto.com Arena. On the injury front, the Thunder are also missing Jalen Williams (left hamstring strain) and Thomas Sorber (right ACL recovery), but they've adjusted well without Williams, who has missed six straight games.

Tip-off is set for 8:30 p.m. MDT / 9:30 p.m. CDT, and fans can catch all the action streaming live on Amazon Prime Video. If the Lakers manage to extend the series, Game 5 would head back to Oklahoma City on Wednesday, May 13, with potential Games 6 and 7 scheduled for later in the week.

The winner of this series will face either the San Antonio Spurs or Minnesota Timberwolves in the Western Conference Finals. But first, the Lakers need to find a way to slow down a Thunder team that looks nearly unstoppable. Will L.A. force a Game 5, or will Oklahoma City punch their ticket to the next round tonight? All eyes are on Los Angeles.