GWANGJU, South Korea (Interstat) — Kim Yun-ha pitched five solid innings and the Kiwoom Heroes broke open a close game with a four-run fourth inning Sunday, defeating the Kia Tigers 8-3 at Gwangju-Kia Champions Field.

The victory came before an announced crowd of 18,112 and took 3 hours, 17 minutes.

Kiwoom improved to 35-60-2, while the Tigers fell to 50-44-3. The Heroes took two of three in the weekend series, bouncing back from a 9-5 loss Saturday after winning 8-5 on Friday.

Kim Yun-ha allowed seven hits and three earned runs while striking out five over five innings to earn the win. He surrendered a two-run homer to Na Sung-bum in the fourth and a solo shot to Park Jae-hyun in the fifth but otherwise kept the Tigers in check.

The Heroes struck first in the second inning. Kim Woong-bin walked, moved to second on a groundout and scored on Kim Gun-hee’s single to center-left.

Kiwoom extended its lead in the third. An Chi-hong singled to left-center and Kim Woong-bin followed with a two-run homer to right field, scoring An.

The decisive rally came in the fourth. Park Chan-hyeok walked and Kim Gun-hee singled. Gwon Hyuk-bin reached on a fielder’s choice bunt that loaded the bases. Seo Geon-chang then singled to right, scoring Park. Matthew Davidson doubled over the center fielder’s head, clearing the bases with two runs as Choo Jae-hyun and Gwon scored.

The Tigers answered in the bottom of the fourth. Kim Do-young homered to center and Na Sung-bum followed with a solo shot to center, cutting the deficit to 5-2.

Kia added another run in the fifth when Park Jae-hyun homered to right, making it 5-3.

Kiwoom padded its lead in the eighth. Lee Hyung-jong led off with a solo homer to right field, restoring a three-run advantage at 6-3.

The Heroes bullpen shut down the Tigers over the final four innings. Kim Seon-gi threw 1⅔ scoreless innings with two strikeouts. Park Ji-sung worked a perfect seventh. Kim Seong-min recorded one out in the eighth. Won Jong-hyan finished with a scoreless ninth, allowing one hit and striking out one.

For the Tigers, Kim Tae-hyeong threw two scoreless innings in relief, striking out two. Choi Ji-min added a perfect inning with two strikeouts. Sung Yeong-tak also tossed a scoreless inning with a strikeout.

Na Sung-bum went 2 for 3 with a home run and an RBI for Kia. Kim Do-young and Park Jae-hyun also homered. The Tigers managed eight hits but left six runners on base.

Kiwoom collected nine hits. In addition to Kim Woong-bin’s homer and Davidson’s double, Lim Byeong-wuk went 1 for 1 with a solo home run and an RBI.

The game ended a stretch in which Kiwoom had lost four of its previous five. The Heroes now head to Seoul for a three-game series against the LG Twins starting Tuesday.

Kia, which had won three of its previous four, travels to Daegu to face the Samsung Lions on Tuesday.

Interstat’s game simulator had projected a final score of Kia Tigers 4, Kiwoom Heroes 3. Interstat’s ELO system gave the Tigers a 68.90 percent chance to win. Kiwoom entered as a pregame favorite with a spread of minus 1.5, and the total of 5 runs went over the over-under line of 11.0.