CHICO, Calif. -- The Cal State East Bay baseball team erased a 6-1 deficit on Sunday to force extra innings at Chico State, but the No. 4 ranked Wildcats walked off with a 10th-inning victory in the series finale to the complete the four-game sweep.

Chico improves to 38-7 with a 31-3 record in conference play and a 25-1 record at Nettleton Stadium. The Pioneers drop to 24-21 overall with a 15-18 mark in California Collegiate Athletic Association (CCAA) games, putting their postseason hopes on life support.

The Pioneers fell behind 3-0 before finally putting a run on the scoreboard in the fifth on Colt Parshall's RBI ground out. But the Chico State offense was relentless, scoring in six of the first eight innings. 

Pioneer starter Andrew Fernandez battled through six innings, allowing six hits. He was charged with five runs, but just one of them was earned as East Bay's defense struggled early in the contest.

The home team led by five runs after seven innings, and it looked like the teams were headed for another one-sided decision. However, the CSUEB bats came alive in the eighth. They loaded the bases with no outs and then picked up a pair of runs on a walk to Zack Perugi and a single by Troy Resch. After a pop out, Joey Dice lifted a sacrifice fly to make the score 6-4 Wildcats.

With two outs, Daniel Goodrich continued an impressive series by belting a double to left, knocking in a run and putting the tying and go-ahead runs in scoring position. Matt Cantelme cashed in on that opportunity, ripping a two-run single to left to give the Pioneers their first lead of the day at 7-6.

However, the Wildcats tied the game in the bottom of the eighth against Nick Sergi on Cody Snider's RBI single. It then took Chico just one extra inning to secure the win against Joshua Kubiske, as Snider singled home Andrew Carrillo, who had left off the 10th inning with a triple, with the walk-off run. 

The Pioneers tallied 11 hits in the loss, with Cantelme (2-for-4) and Goodrich (2-for-5) leading the way. They also got some offense from a most unlikely source. With a roster decimated by injuries, head coach Mike Cummins had an extremely limited list if healthy position players to work with, and so he turned to junior Jacob Call to play second base. An All-CCAA pitcher in 2016, Call had never appeared at any other position in three years with the Pioneers. 

Though overshadowed by the extra-inning loss, Call's performance was extremely impressive. He did not make an error in five defensive chances and went 2-for-4 at the plate with two singles and a run scored.

The Pioneers will return home to wrap up the regular season next weekend with a four-game series against North Division rival Stanislaus State. First pitch of the opener is set for 3 p.m. on Thursday, May 4.