The Expos' young outfield Both Cromartie and Valentine won starting jobs in Montreal's
outfield out of Spring training , with Cromartie shifting to left field. Joining them in the Expos' outfield would be 22-year-old
center fielder Andre Dawson. Their youth, speed and talent soon made them the talk of the baseball world. Usually batting either second or fifth in the Expos' line-up, he spent most of the season with a
batting average over .300, but cooled off to .282 with five home runs and 50 RBIs by the end of the season. Cromartie was considered something of a defensive liability his rookie season, After going 0-for-five in the season opener with the
Pittsburgh Pirates, Cromartie embarked upon a 19-game
hitting streak, the longest of his career. His hot start helped propel the Expos into their first real pennant race in franchise history. The Expos battled the Pirates and
Philadelphia Phillies for first place in the
National League East throughout the season, with their lead in the division peaking at 6.5 games on July 2. They would eventually win a franchise-best 95 games but still finished second to the World Series-winning Pirates by two games. For his part, Cromartie batted .275 with eight home runs and a career-best 84
runs scored.
Shift to first base Cromartie had played some first base in the minor leagues, and was shifted there for the season after the Expos acquired outfielder
Ron LeFlore from the
Detroit Tigers at the
Winter meetings. He had difficulty fielding his new position, committing a league leading 14
errors at first; however, he had one of his best seasons with his bat. He batted .288, and putting up career highs in home runs (14) and RBIs (70). Perhaps the most memorable moment of Cromartie's 1980 season was a
Fourth of July doubleheader with the New York Mets. He committed two of five errors by the Expos in the sloppily played first game loss (the Mets also committed three). After committing a third error in the second game, he also hit a two-run home run that carried the Expos to a 6–5 victory. The Expos again found themselves in a pennant race in 1980 despite key injuries to LeFlore, Valentine,
Larry Parrish and
pitcher Bill Lee, among others (Cromartie was the only player on the team who managed to play a full 162 game schedule). Their season came down to a season ending three game set with the Philadelphia Phillies at Olympic Stadium; the Phillies won two out of three to win the division, and head to the post-season (Cromartie went hitless in eleven
at bats). The Expos were uninterested in re-signing LeFlore for the season, and allowed him to depart via free agency. Rather than shifting Cromartie back to left field, he remained at first with rookie
Tim Raines given the starting job in left. When Valentine was dealt to the New York Mets shortly before
the players strike, Cromartie shifted to right field with
Willie Montañez assuming first base duties. With Montañez producing just a .177 batting average, he was dealt to the Pirates for fellow
first baseman John Milner on August 20. Cromartie was eventually shifted back to first base in September with
Tim Wallach taking over in right field.
Post season As a result of the players strike, the owners decided to split the 1981 season into two halves, with the first-place teams from each half in each division meeting in a best-of-five divisional playoff series (the first time that Major League Baseball used a split-season format since ). Cromartie batted .328 with three home runs, 18 RBIs and 24 runs scored in the second half to help the Expos win the NL East by half a game over the
St. Louis Cardinals. After two consecutive near misses, Cromartie and most of his teammates were reaching the post season for the first time in their careers. Cromartie went two-for-four with an RBI
double off
Steve Carlton in the opening game of the
1981 National League Division Series to help bring his club to a 3–1 victory over the future
Hall of Famer. They defeated the Phillies in five games, but lost to the
Los Angeles Dodgers in a five-game
National League Championship Series. Cromartie was in the
on-deck circle when the Dodgers recorded the final out of the
1981 National League Championship Series.
Right field Just as the season was set to begin, the Expos acquired first baseman
Al Oliver from the
Texas Rangers for
third baseman Larry Parrish and first baseman
Dave Hostetler. With this acquisition, Cromartie was shifted to right field. Cromartie was batting just .211 when he belted a
walk-off home run off Cardinals
closer Bruce Sutter on June 7. From there, he brought his average up to a far more respectable .250 with decent power numbers (10 home runs, 49 RBIs); however, the Expos still elected to acquire
right fielder Joel Youngblood from the New York Mets for a
player to be named later on August 4. Youngblood cost Cromartie playing time when he first arrived in Montreal. The .192 batting average he put up in his first month with his new club, however, prompted
manager Jim Fanning to give the job back to Cromartie full-time. For the season, Cromartie batted .254 with 62 RBIs and matched his career high with 14 home runs. Youngblood's tenure with the Expos lasted just one season, as did Fanning's. With the arrival of new manager
Bill Virdon in , Cromartie found himself in a battle with
Terry Francona, who was coming back from a knee injury, for the right field job the following spring. Cromartie won the job, but still saw limited action in . On July 15, Cromartie tipped a food table in the Expos clubhouse following a 9–3 loss to the
Atlanta Braves. Virdon suspended him three games for his temper tantrum. Back problems limited him to nine plate appearances in the Expos' final 26 games. ==Yomiuri Giants==