UNCASVILLE, Conn. — In theory, it should be possible to slow down or even stop Alyssa Thomas, the hybrid 6-foot-2 forward for the Connecticut Sun.

Plagued by significant injuries to both her shoulders, Thomas is unable to raise her arms above her head right now . Yet the often-overlooked Thomas is the player no one on the star-studded Los Angeles Sparks frontcourt can stop as the semifinal series shifts to Game 3 on Sunday — and the player who has posted a pair of double-doubles over the past week to lead the Sun to within one win of the W.N.B.A. finals.

Thomas draws comparisons to many of the best in the N.B.A. and W.N.B.A. alike, yet she possesses a game entirely her own.

“I’ve had to change my game,” Thomas said, sitting at her locker after posting 12 points and 13 rebounds in Thursday night’s Game 2 win. “At Maryland, I was all about mid-range jumpers, doing all of that. And I know how people are going to play me. But I do have a full game, and I do attack really hard. So despite how people are playing me, I still can find my way to the rim.”