2014 American League Championship Series

Kansas City won the series, 4–0.

*: postponed from October 13 due to rain

The Royals drew first blood in a back-and-forth opener that featured high offensive output from both teams. After hitting just three home runs in the regular season,[6] Alcides Escobar hit a one-out homer to left to give the Royals a 1–0 lead. Later in the inning, with the bases loaded, Alex Gordon hit a broken bat, looping fly ball that dropped just fair inside the right-field line to plate all three runners. Suddenly, it was 4–0 Kansas City. Baltimore got a run back in the bottom of the inning on Adam Jones' RBI-single, but it could have been more had it not been for a great diving catch by Gordon in the left-center field gap, robbing Steven Pearce of a hit. In the bottom of the fifth, after the Royals added a run in the top of the frame, the Orioles finally got to James Shields. Nelson Cruz added to his postseason legacy with an RBI-double and Ryan Flaherty delivered a two-run single to make it a one-run game, 5–4. In the sixth, after a walk to Jonathan Schoop and a flare single to right by Nick Markakis, Alejandro De Aza hit a high chopper past the pitcher's mound that shortstop Escobar had no play on; Schoop scored to tie the game. Jones hit what appeared to be a double play ball, but Mike Moustaskas' relay throw short-hopped first baseman Eric Hosmer and the inning continued to bring up Cruz. He could not deliver the big hit this time as he rolled into an inning-ending double play.

The game turned to the bullpens, generally decided to be a strength for both teams, but in the top of the ninth, Orioles' reliever Zach Britton struggled to find the strike zone, walking the first three batters; at one point, Britton missed with 12 straight pitches. Britton then got out of the jam by getting Hosmer on a force play at home, before Darren O'Day was brought in to pitch, getting Billy Butler to hit into a double play to keep the game tied heading to the bottom of the ninth.

Wade Davis finished a strong outing by striking out the heart of the Orioles' lineup in the bottom of the ninth, and Game 1 was headed to extra innings. Alex Gordon's postseason breakout was complete when his tenth inning fly landed over the top of the high right-field wall to give Kansas City a 6–5 lead, but they weren't done yet. Salvador Pérez reached on a walk, then Moustakas launched his third home run of the playoffs, giving the Royals a three-run lead.

Royals' closer Greg Holland got the first two outs in the bottom of the tenth, but then gave up a single to Flaherty. Pinch-hitter Jimmy Paredes reached on a walk, then Delmon Young delivered a pinch-hit single to make it a two-run game. Holland would then get Markakis to ground out to second, ending the game.

The Royals struck first in Game 2 off of Bud Norris when with one out in the first when Nori Aoki singled, Lorenzo Cain doubled, and Eric Hosmer singled to score both runners. In the bottom of the second, Yordano Ventura walked three batters to load the bases for the Orioles before Caleb Joseph's sacrifice fly cut the Royals' lead to 2–1. They get the run back in the third when Cain singled with two outs, moved to third on Hosmer's single and scored on Billy Butler's double. In the bottom of the inning, Alejandro De Aza doubled before Adam Jones's two-run home run tied the game. In the fourth, Mike Moustakas's home run put the Royals back in front 4–3. The Orioles tied it in the fifth when De Aza singled, moved to third on Jones's single, and scored on Nelson Cruz's groundout.

The Kansas City defense continued their postseason run of highlight reel plays in the 6th when Adam Jones led off the inning with what appeared to be (at least) a double to the right-center field gap. However, Cain made diving catch to retire Jones. Statcast calculated that Cain covered 82 feet (25 m) in 3.65 seconds, reaching a top speed of 21.2 miles per hour (34.1 km/h) on the play.[8] In the 7th, Cain (now playing in right field) would make another great catch, with the bases loaded, down the right field line to rob J. J. Hardy of at least 2 RBI.

The game stayed tied until the top of the ninth when Omar Infante hit a leadoff single off of Darren O'Day. Terrance Gore came in to pinch-run for Infante and moved to second on a sacrifice bunt after Zach Britton relieved O'Day, and the speedy runner scored easily on Alcides Escobar's double. After Jarrod Dyson reached on an error, Lorenzo Cain's single made it 6-4 Royals. Greg Holland threw a scoreless bottom of the ninth for his second save of the series. This was the last playoff game to take place at Camden Yards until the 2023 ALDS.

The Orioles struck first in Game 3 on back-to-back doubles in the second by Steve Pearce and J. J. Hardy off of Jeremy Guthrie, but that would be the only time they led in the series as four relievers threw four perfect innings. The Royals loaded the bases in the fourth on two singles and a walk off of Wei-Yin Chen before Alex Gordon's groundout tied the game. In the sixth, Nori Aoki hit a leadoff single off of Chen, moved to third on Eric Hosmer's single one out later, and scored on Billy Butler's sacrifice fly. The Royals' 2–1 lead held, with Jason Frasor pitching a perfect 6th, Kelvin Herrera a perfect 7th, Wade Davis a perfect 8th, and Greg Holland a perfect 9th for the save, putting them one win away from the World Series.

The Royals continued their postseason streak of highlight reel defensive plays, this time highlighted by Mike Moustakas. In the 4th he dove and snagged a hard liner from Steve Pearce for an out, but that play seemed routine compared to his play in the 6th. Adam Jones popped a ball up in foul territory past 3rd base. Moustakas gave chase and caught the ball while falling over the railing and into the fan dugout, where the loyal Royals fans caught him to prevent him from landing on his head.

In Game 4, the Royals took a 2–0 lead in the first off of Miguel Gonzalez when Alcides Escobar hit a leadoff singled and moved to second on Nori Aoki's hit-by-pitch. Lorenzo Cain's sacrifice bunt (the eventual ALCS MVP's first ever sacrifice bunt) moved both runners a base before Eric Hosmer grounded to first. Baseman Steve Pearce threw the ball to catcher Caleb Joseph, but the ball got away, allowing Escobar and Aoki to score. Though Gonzalez and the Orioles bullpen shut out the Royals for the rest of the game, Jason Vargas and the Kansas City bullpen limited Baltimore to only Ryan Flaherty's home run in the third and four hits. The Royals extended their postseason win streak to 11 games, dating back to Game 5 of the 1985 World Series. This win gave Kansas City its first American League Pennant since 1985 (and third overall, the most of any AL expansion franchise), and for the first time in Major League history, a team won all eight of their first postseason games (the previous record was seven, held by the 2007 Colorado Rockies and the 1976 Cincinnati Reds).

The Kansas City 8-game postseason winning streak wouldn't be complete without a defensive gem, this time provided by multi-time gold-glove left-fielder Alex Gordon. In the 5th, J. J. Hardy looked to have an extra-base hit deep to left-center field, but Gordon, running full speed, leaped and caught the ball, while crashing into the wall for the out.