MOUNT PLEASANT, Texas—Texarkana College kept offensive power Alvin College on the ropes most of the game, but the Bulldogs just couldn’t deliver the knockout punch.

The Dolphins, who entered the game with a hefty .363 team batting average, rallied late to post a come-from-behind 5-3 win over TC in opening-round action Saturday in the Region XIV baseball tournament.

The setback drops the Bulldogs (33-22) into the losers’ bracket, where they will play at 1 p.m. today against the loser of Saturday night’s late game matching nationally-ranked Navarro (45-8) and Blinn (24-25...