The Reading Fightin Phils split a pair of games in Trenton on Sunday.
The Fightins won the resumption of a rain-suspended game from Saturday night, beating the Thunder 4-3 in 14 innings.
Cesar Hernandez hit a sacrifice fly in the 14th to win it for Reading.
The Fightin Phils dropped the ensuing full game 15-0 to the Thunder.
Reading (16-16) will open a three-game series in New Hampshire on Monday at 5:35pm.