CINCINNATI (Interstat) — The surging Cincinnati Reds beat the Chicago Cubs 1-0 on Sunday and moved into a tie with the New York Mets for the final wild card spot in the National League.

In a tense pitchers’ duel delayed by rain for one hour and 11 minutes, Gavin Lux’s third-inning RBI double provided the game’s only run as the Reds completed a four-game sweep of the Cubs at Great American Ball Park.

The Reds have won a season-high five straight games and six of seven. The Mets lost to the Nationals earlier in the day, allowing Cincinnati to pull even in the playoff chase.

Cincinnati’s victory was a collective effort on the mound. Starter Andrew Abbott navigated 4 2/3 scoreless innings, scattering five hits. Nick Martinez followed with 2 1/3 perfect innings of relief to earn the win, improving to 11-13. Graham Ashcraft handled the eighth and Tony Santillan struck out two in a scoreless ninth for his seventh save.

The Cubs’ best chance to score came in the fourth inning. Carlos Santana and Dansby Swanson hit back-to-back singles off Abbott, putting runners on first and second with one out. Justin Turner then flew out to deep center, allowing Santana to advance to third, but Michael Busch popped out to end the threat.

Chicago threatened again in the ninth against Santillan. Pinch-hitter Moisés Ballesteros walked and, with two outs, Michael Busch also walked to put the potential go-ahead run on base. Santillan escaped by striking out Pete Crow-Armstrong to end the game.

The lone run crossed in the bottom of the third against Cubs starter Jameson Taillon. Matt McLain doubled sharply to left field with one out. After TJ Friedl flew out, Lux lined a double to right field, easily scoring McLain.

Taillon was the hard-luck loser, falling to 10-7 despite a strong outing. He allowed just one run on five hits over seven innings, striking out four. The Cubs managed six hits total but went 0 for 4 with runners in scoring position and left six men on base.

The game, played before a crowd of 29,661, lasted 2 hours and 13 minutes, not including the rain delay.

With the loss, the Cubs fell to 88-68. The Reds improved to 80-76, pulling within eight games of Chicago in the standings and drawing even with the Mets for the NL’s third wild card.

The result defied pregame projections from Interstat, which gave the Cubs a 53.2% probability to win and simulated a 7-6 Chicago victory. The combined one run went well under the over/under line of 8.5.

Chicago travels home to begin a crucial three-game series against the New York Mets on Tuesday. Cincinnati remains at home to open a three-game set with the Pittsburgh Pirates, also on Tuesday.