Began the season on the Opening Day roster and played in 113 games in St. Louis. Played 18 games in Memphis (AAA)...Led team with 20 stolen bases, the most by a Cardinals player since Cesar Izturis (24) in 2008...Hit 12 home runs, becoming the youngest Cardinals second baseman to hit 10 or more home runs in a season since Rogers Hornsby hit 21 HR in 1921 at age 25...Hit first MLB home run, which was a grand slam, vs. KC (6/2) off James Shields. Became the first Cardinals player to hit a grand slam as his first HR since Jake Westbrook (2011), first second baseman since Felipe Lopez (2010) and rookie second baseman since Bo Hart (2003). Became the 12th youngest Cardinal to hit a grand slam (23 years, 236 days). Was the only Cardinals grand slam in 2014...Became the first Cardinals rookie since Colby Rasmus (2009) to tally 100 hits in a season...Batted .315 (23-73, 3 HR) vs. left-handed pitchers. Had 10 HR, 30 RBI and 14 SB in Cardinals wins...Posted 25 multi-hit games and two four-hit games (5/28 vs. NYY & 8/10 at BAL)...Ranked 10th in the National League with a .341 BA with runners in scoring position and 2 outs...Had 28 two-out RBI, ranking 3rd for STL and T18th among all N.L. players. Batted .296 (34-115) with 2 outs...Started 100 games at second base and turned 70 double plays, 6th among NL 2nd basemen...Was optioned to Memphis (AAA) 4/27-5/14. Hit .344 (22-64) with 3 2Bs, 2 HRs and 10 RBI over 15 games, playing at second base each game...Voted National League Rookie of the Month in May, leading all N.L. rookies with a .333 BA. Was the first Cardinals rookie to win the award since Brian Barden in April of 2009...Placed on the 15-day disabled list with left shoulder soreness on 6/22, suffered after a diving catch in the field. Played three games at Memphis on a rehab assignment 7/1-6 (5-11, .455), coming off the DL on 7/6...Stole two bases in a game at CIN (5/25) and was successful in each of his first 10 career attempts...Had a .567 slugging percentage in July (T8th NL) and five home runs (T5th NL)...Smacked home runs in consecutive games three times (7/8-9 vs. PIT, 7/11-12 at MIL, 8/31-9/1 vs. CHI/PIT)...Hit 5 home runs over 7 days 7/6-12 after returning from the disabled list (.333, 8-24, 5 HR, 8 RBI, 1.000 slug)...Hit first career walk-off home run on 7/8 vs. PIT after Matt Adams had done so the prior game (7/7 vs. PIT)...Tallied his first multi-home run game vs. BOS (8/7) and scored a season-high three runs...Played in eight postseason games (3 NLDS, 5 NLCS)...Hit three postseason home runs, the most in MLB history by a rookie second baseman...Hit a walk-off home run in Game 2 of the NLCS (10/12) off Sergio Romo, the 4th walk-off home run in Cardinals postseason history joining Ozzie Smith (NLCS 5, 1985), Jim Edmonds (NLCS 6, 2004) and David Freese (WS 6, 2011)...It was also the 7th walk-off hit in Cardinals postseason history...The walk-off home run was the 4th in MLB history by a second baseman (Alfonso Soriano, Jeff Kent, Bill Mazeroski)...Hit a go-ahead/game-winning home run in NLDS Game 3 (10/6) vs. LAD off Scott Elbert...Recorded seven extra base hits in the postseason, the most in Cardinals history by a rookie and the most by a NL rookie second baseman...His 15 total bases in the NLCS were the most by a Cardinals second baseman surpassing Tom Herr (14, 1985)...Tripled and doubled in Game 3 of NLCS (10/14), the first Cardinal with multiple extra base hits since David Green (WS Game 5, 1982)...Became the first Cardinals rookie to log an extra base hit in three consecutive postseason at-bats (Game 2 NLCS HR; Game 3 NLCS 2B & 3B)...His .724 slugging percentage was the highest by a Cardinals second baseman and the highest by a Cardinals middle infielder since Pepper Martin (.792 in the 1931 World Series)...Recorded seven hits and all were extra base hits.
Began the season in Memphis (AAA), playing 107 games, starting 102 at second base, before being purchased by St. Louis on 8/16 where he would remain the remainder of the season and throughout the playoffs... Made Major League debut at Wrigley Field vs. CHI (8/16), going 0-for-3 while starting at second base... Picked up his first Major League hit at MIL (8/19), an infield single against Marco Estrada. Was 2-for-5 with two stolen bases... Posted consecutive multi-hit games 8/19-20 at MIL, getting a season-high three hits, including a double, on 8/20. Five of his nine career hits are against Milwaukee... Was a perfect 3-for-3 in stolen base attempts in the majors... Appeared in 18 games at 2B, starting 10 games. Was flawless in 65 total chances with 8 double plays turned... Batted .303 with 10 HR and 45 RBI in Memphis (AAA). Led the team with eight triples, tying the Redbirds single-season franchise record held by Stubby Clapp... Played in 107 games at Memphis scoring 68 runs, had 125 hits and was 20-for-21 in stolen bases attempts... Led all Pacific Coast League second basemen with a .974 fielding percentage, 504 total chances, 195 putouts, 296 assists and games played (102)... Ran off a 15-game hitting streak from 5/6-27, batting .429 (30-70) with 4 HR and 7 RBI during the stretch... Named 2013 Cardinals Minor League Player of the Year... Cardinals organization Minor League Player of the Month for May, batting .375 (39-104) with 4 HR, 8 RBI and 23 runs scored... Rated as the No. 3 prospect in the Cardinals organization by Baseball America... Played in seven post-season games throughout the NLDS, NLCS and World Series...was 1-for-6 with a stolen base in the postseason... lone hit came in the 8th inning of Game 3 of the World Series vs. BOS (10/26)...stole second base (Workman/Saltalamacchia) following his hit, making him the sixth Cardinals rookie to steal a base in the World Series (Pepper Martin, Willie McGee, Lance Johnson, Mike Shannon, Pete Kozma).
Hit safely in 94 of 126 games played, and reached base safely in 104 of 126 games...ranked third in the Texas League with 150 hits...ranked among Cardinals minor leaguer leaders in runs (79, 7th), hits (150, T2nd), triples (6, T2nd) and stolen bases (21, 4th)...tallied 45 multi-hit games, nine games of three hits or more and two four-hit games (5/17 at Arkansas & 6/30 vs. Frisco)...named Texas League Player of the Week (5/14-20), batting .452 (14-31) with two home runs and seven RBI. Hit safely in all seven games during the week...compiled a 15-game hitting streak (5/14-31), the second longest on the Springfield... team and seventh longest in the Texas League, batting .343 (23-67) during the streak. Finished the month of May batting .333 (34-102)... selected to the Texas League All-Star North squad as the starting second baseman and went 1-for-2 with a run scored...led Texas League second basemen in games (123), total chances (649), putouts (262), assists (370) and double plays (111)...hit two lead-off home runs (6/10 vs. Arkansas & 7/29 at NW Arkansas)... batted .143 (5-35) with an RBI and two walks in nine Texas League playoff games...batted .324 (24-74) for Surprise in Arizona Fall League, earning selection to AFL Top Prospects Team...rated as the fifth-best prospect in the Cardinals organization for the second consecutive year by Baseball America.