SEOUL (Interstat) — Na Seung-yeup went 4 for 4 with a home run and four RBIs, but his tying two-run shot in the ninth inning only forced extra frames as the Doosan Bears outlasted the Lotte Giants 10-9 in 11 innings Saturday afternoon at Jamsil Stadium.

The Bears overcame a 7-6 deficit in the seventh, regained the lead in the eighth, then watched Na’s heroics knot the score before plating the winning run in the bottom of the 11th. The victory improved Doosan to 19-22-1, while Lotte fell to 16-23-1 before a crowd of 23,750.

Doosan jumped out early, scoring four runs in the first inning. Park Chan-ho singled and scored on a Daz Cameron single, and Kim Min-seok cleared the bases with a double that plated two. Park Ji-hoon followed with an RBI double, and the Bears led 4-0 after one.

Lotte answered in the third. Son Ho-young singled and advanced on a passed ball, then scored on Go Seung-min’s double. After Jo-jo Reyes flied out, Na singled home Go. Han Dong-hui then crushed a two-run homer to center field, knotting the game at 4-4.

The Bears struck back in the fourth. Kang Seung-ho led off with an infield single, moved to third on a sacrifice bunt and scored on Son Ah-seop’s sacrifice fly. Cameron singled in another run, and Doosan led 6-4.

Lotte chipped away. In the fifth, Go doubled and scored on Na’s single to left, making it 6-5. Yoo Kang-nam led off the sixth with a solo homer to left, tying the game at 6-6. In the seventh, Go again scored, this time on a sacrifice fly by Han, giving Lotte its first lead at 7-6.

Doosan answered in the bottom of the seventh. With two outs and a runner on, Yang Eui-ji launched a two-run homer to left field, putting the Bears ahead 8-7. In the eighth, Son Ah-seop drove in an insurance run with an infield single, stretching the lead to 9-7.

Lotte’s last stand came in the ninth. Hwang Seong-bin led off with an infield single and stole second. After two strikeouts, Na Seung-yeup crushed a homer to right field, scoring Hwang and tying the game at 9-9.

Neither team scored in the 10th. Lotte went down in order in the top of the 11th, and Doosan pushed across the winning run in the bottom half to seal the walk-off victory.

Na Seung-yeup’s performance was the standout for Lotte. He reached base in all five plate appearances, collecting four hits, a home run and four RBIs. Han Dong-hui contributed a homer and three RBIs, going 1 for 4. For Doosan, Yang Eui-ji drove in two runs with his homer and finished 1 for 3. Son Ah-seop went 2 for 4 with two RBIs.

The pitching staffs saw several effective relief outings. Lotte’s Choi E-jun tossed one-third of an inning without allowing a hit. Jeong Cheol-won and Choi Jun-yong each threw a scoreless inning with a strikeout. Hyun Do-hoon worked one and two-thirds innings, allowing one hit and one earned run while striking out four. For Doosan, Yang Jae-hun threw two scoreless innings, fanning five and surrendering no hits. Kim Jeong-woo followed with one and two-thirds hitless innings, striking out two. Both relievers earned holds.

The game was the second of a three-game weekend series between the division rivals. Lotte had won the opener 6-5 on Friday, while Doosan had taken two of three in a previous set in April. The two teams meet again Sunday at Jamsil before Lotte heads to Hanwha and Doosan hosts NC.

Interstat’s game simulator had projected a final score of Doosan Bears 4, Lotte Giants 3. Interstat’s ELO system gave Doosan a 56.00 percent probability to win. Lotte was installed as a pregame favorite with a spread of minus 1.5. The total of 17 runs went under the over-under line of 7.5.