Wehiwa Aloy had a triple, a homer and three RBI, while Zach Root tossed five scoreless innings, as Arkansas eliminated UCLA 7-3.
Aloy smacked a two-run homer in the first, his 21st of the season, to give the Razorbacks (50-14) the early lead.
Root (9-6) scattered three hits, walked two and fanned five to record the win.
Aloy launched a run-scoring triple in the fifth as Arkansas extended its lead to 3-0.
Logan Maxwell added insurance with a two-run double with two away in the seventh for a 5-0 advantage.
In the eighth, Cam Kozeal scored on a wild pitch and Thomas Jr. added a run-scoring double in the eighth to make it 7-0.
The Bruins (48-18) scored three in the ninth to avoid the shutout.
Brent Iredale went 2 for 2 with two walks and three runs for the Hogs.
Aiden Jimenez tossed three scoreless innings in relief with one hit, one walk and two strikeouts for Arkansas.
Payton Brennan had two hits and scored once for UCLA.