For a second straight night, the Arizona Diamondbacks rallied late to stun the Philadelphia Phillies in the National League Championship Series.

Arizona scored three times in the eighth inning, highlighted by Alek Thomas' pinch-hit, game-tying two-run homer, to earn a critical 6-5 win over the defending NL champions in Friday's Game 4 that evened the best-of-seven series at two games apiece.

After losing Games 1 and 2 in Philadelphia by a combined score of 15-3, the Diamondbacks got back into the series with Thursday's 2-1 comeback victory in Game 3, in which they trailed 1-0 in the seventh inning and won it on Ketel Marte's run-scoring single off Phillies closer Craig Kimbrel in the ninth.

Kimbrel came on in the eighth of Game 4 to protect a 5-3 Phillies' lead and again faltered. Lourdes Gurriel Jr. led off Arizona's half of the inning with a double and two batters later, Thomas drove a pitch into Chase Field's swimming pool in right-centre field to tie the contest.

Marte later singled with two out and Kimbrel hit Corbin Carroll with a pitch to set the stage for Gabriel Moreno, who greeted reliever Jose Alvarado with a single to center that drove in Marte for a 6-5 Arizona edge.

Philadelphia got the tying run in scoring position in the ninth when Kyle Schwarber doubled with two out, but Diamondbacks closer Paul Sewald struck out Trea Turner to end the game and keep the momentum in Arizona's favour.

In a series where the home team has won every time thus far, the Diamondbacks will host Game 5 on Saturday.

Arizona took a 2-0 lead on Emmanuel Rivera's RBI single in the second inning and Moreno's base hit in the third that also plated Marte, but the battle-tested Phillies responded with five runs over the next four innings to forge ahead.

Schwarber got them on the board in the fourth with his fourth home run of the series and Brandon Marsh doubled home J.T. Realmuto in the fifth to create a 2-2 tie. The Phillies then took advantage of wildness and a defensive miscue by the young Diamondbacks to score twice more in the sixth.

Andrew Saalfrank, one of eight Arizona pitchers used on the night, walked Schwarber, Turner and Bryce Harper in succession to load the bases for Alec Bohm, who delivered an infield single to send home Schwarber with the go-ahead run. Third baseman Rivera threw errantly to home plate on the play, allowing Turner to score as well and put Philadelphia ahead 4-2.

The Phillies tacked on another run when Johan Rojas tripled in the seventh and scored on Turner's sacrifice fly.

Both Schwarber and Bohm had two hits and an RBI for the Phillies. Moreno finished 2 for 3 with two RBIs for Arizona, while Marte had two hits and scored twice.

Lourdes Gurriel Jr. homered and knocked in two runs to back a solid start from Zac Gallen, and the Arizona Diamondbacks continued their surprising postseason run with Monday's 4-2 victory over the Los Angeles Dodgers.

Arizona, the sixth and lowest playoff seed in the National League, took a 2-0 lead in this best-of-five Division Series against a Dodgers team it finished 16 games behind of in the NL West standings. The Diamondbacks are now 4-0 in these playoffs after sweeping the NL Central champion Milwaukee Brewers on the road in the Wild Card round.

The Diamondbacks now return home with a chance to close out this series Wednesday. 

After battering Los Angeles ace Clayton Kershaw in an 11-2 rout in Saturday's Game 1, the Diamondbacks started fast again with three first-inning runs off rookie Bobby Miller.

The first three Arizona hitters reached base in front of Christian Walker's sacrifice fly and Gabriel Moreno's run-scoring groundout, and Gurriel later produced an RBI single to extend the lead to 3-0.

Los Angeles got on the board in the fourth on J.D. Martinez's solo homer off Gallen, but Arizona countered with Gurriel's homer in the sixth to increase the margin to 4-1.

Max Muncy and Martinez singled to chase Gallen in the bottom of the sixth and got a run back on Enrique Hernandez's RBI single, but reliever Ryan Thompson prevented further damage by getting the final out and stranding the bases loaded.

Thompson, Kevin Ginkel and Paul Sewald then held the Dodgers without a hit over the final three innings to seal the win.

Gallen was charged with two runs over 5 1/3 innings, while Miller was pulled after permitting three runs and four hits in just 1 2/3 innings.

Riley's homer caps rally as Braves even series with Phillies

Austin Riley's dramatic two-run homer in the bottom of the eighth inning capped a crucial comeback for the Atlanta Braves, who rallied from a four-run deficit to defeat the Philadelphia Phillies, 5-4, in Monday's Game 2 of the National League Division Series.

Atlanta, which won a major league-best 104 games during the regular season, was facing a 2-0 deficit in this best-of-five series before scoring five unanswered runs to avoid a potential elimination game in Philadephia on Wednesday.

Travis d'Arnaud aided the improbable rally with a two-run homer in the seventh inning off Phillies starter Zack Wheeler, who didn't allow a hit until the sixth as Philadelphia built a 4-0 lead.

The Braves also got a sensational defensive play in the ninth from center fielder Michael Harris II, who made a leaping catch to rob Nick Castellanos of extra bases to start a game-ending double play that caught Phillies star Bryce Harper attempting to score from first base.

Riley stepped up with two outs in the eighth and Ronald Acuna Jr. aboard with the Braves down 4-3. The All-Star third baseman worked the count full against Jeff Hoffman before taking a slider over the left-field wall to put the NL East champs ahead for the first time in the series.

The Phillies put the tying run aboard in the ninth, however, when Harper drew a leadoff walk. Two batters later, Castellanos sent a deep drive off Braves closer Raisel Iglesias that Harris snared just before hitting the outfield wall before quickly throwing the ball to the infield, where Riley grabbed it and fired to first base to double off Harper after the two-time NL MVP was frantically trying to get back to the bag after rounding second base.

Wheeler allowed just one baserunner, who reached on an error by shortstop Trea Turner, before walking Acuna with two outs in the sixth. Ozzie Albies then broke up the no-hit bid with a single to right that led to Atlanta's first run when Acuna raced home as Turner misplayed the relay throw. 

D'Arnaud cut the lead to 4-3 by homering off Wheeler's final pitch with Matt Olson on base in the seventh.

Wheeler struck out 10 over 6 1/3 innings and was charged with three runs - two earned - while yielding only three hits.

The Phillies built their 4-0 lead on J.T. Realmuto's two-run homer off Max Fried in the third inning, Alec Bohm's RBI single in the first and Bryson Stott's sac fly in the fith. 

Fried lasted just four innings and allowed three runs while walking four.