Thomas went 3-for-5 with a double, an RBI and a run scored in Wednesday's 5-1 win over the Brewers.

EDGE Analysis

Thomas, who was called up from Triple-A Reno on Monday, returned to MLB in a big way, going 6-for-13 with a double, homer, three RBI and four runs scored over the three-game series in Milwaukee. As good as Thomas was during the series, including superlative defense in center field, it remains to be seen if he's solved the issue of hitting against left-handed pitching. Thomas had one at-bat against a southpaw during the series -- a fielder's choice grounder to second base (89.4 mph exit velocity) against Milwaukee's Hoby Milner on Tuesday -- but the overall results were encouraging that the 23-year-old outfielder will continue to do in the majors what he did in the minors over the last month (.348/.409/.518).

Thomas went 2-for-4 with a two-run home run and an additional run in a 9-1 win against the Brewers on Monday.

EDGE Analysis

Thomas spent over a month in the minors before he was recalled Monday, and the adjustments he made while with Triple-A Reno appeared to have paid off, at least for one game. The outfielder wasted little time announcing his return, smacking a two-run shot off Corbin Burnes in the first inning. If Thomas continues to hit well, he could challenge Pavin Smith -- who has posted a mediocre .674 OPS on the season -- for playing time in right field moving forward.

Thomas was recalled from Triple-A Reno on Monday.

EDGE Analysis

Thomas ditched his leg kick after being sent down to Reno a month ago and batted .348/.409/.518 with three home runs and two stolen bases over 26 games to earn another shot in the majors. Granted, it's a very favorable environment he was hitting in, but it will be interesting to see whether Thomas can carry over the adjustments at the major-league level. He could push Pavin Smith for playing time.

Thomas adjusted his swing in the minors and is batting .349/.413/.500 over 25 games at Triple-A Reno, Theo Mackie of the Arizona Republic reports.

EDGE Analysis

Thomas, who opened the season in the Diamondbacks' outfield, was demoted to Triple-A on May 17. His struggles against left-handers -- 1-for-36 with a single -- was the main reason Thomas was sent down. He immediately got to work on his swing mechanics with Drew Hedman, the organization's director of minor league hitting coach. They started by ditching a leg kick, but Hedman and Thomas eventually settled on improving the timing of his weight transfer, which seems to have worked against pitchers of either hand. Thomas is slashing .314/.324/.429 against southpaws.

The Diamondbacks will work on fixing Thomas' swing while he's in the minors, Theo Mackie of the Arizona Republic reports. Thomas was demoted to Triple-A Reno on Wednesday.

EDGE Analysis

Specifically, the organization is focused on excessive movement in the lower half of his body, which can lead to groundballs rolled over to the right side of the infield. There's also been an issue identifying strikes on outer half of the plate. "There's a lot of excessive movement with the lower half which is creating some force moving forward," said manager Torey Lovullo. "I know to impact the baseball but I feel like it was changing his sightlines." In addition to work at the plate, Lovullo identified areas in the field that Thomas needs to address, like routes taken on batted balls and taking the proper angle. Dominic Fletcher will take over in the outfield while Thomas works at Reno.

Arizona optioned Thomas to Triple-A Reno on Wednesday.

EDGE Analysis

The writing seemed to be on the wall for Thomas' demotion while he had begun to lose out on playing time against right-handed pitchers lately. The 23-year-old could use a reset, as he's managed just a .195/.252/.327 batting line with two home runs in his first 39 games this season. Dominic Fletcher has displaced him as Arizona's primary center fielder.

Thomas is out of the lineup Sunday against the Marlins.

EDGE Analysis

For the second time in three games, Thomas is on the bench against a right-hander (Logan Webb). The 23-year-old looks like he could be on the outs for a full-time role in the Arizona outfield, at least for as long as red-hot rookie Dominic Fletcher continues to sizzle at the plate. Fletcher has posted a monstrous 1.232 OPS since his April 30 call-up from Triple-A Reno, while Thomas has supplied a .567 OPS during that same two-week stretch.

Thomas will start against right-handers and be out of the lineup against lefties going forward, Theo Mackie of the Arizona Republic reports.

EDGE Analysis

This is an alteration the Diamondbacks introduced over the last week, but it was uncertain how long it would last. Thomas is a prized prospect but is struggling with pitches on the outer half of the plate, and now he must contend with the suddenly hot Dominic Fletcher, an under-the-radar prospect who was called up to help fill in when Corbin Carroll injured his knee two weeks ago. Carroll is back and Fletcher is in the midst of a career-enhancing series against the Giants, going 8-for-12 with a double, a triple, two home runs and 11 RBI. Lourdes Gurriel typically starts against lefties, but his starts will now come at the expense of Thomas instead of Fletcher.

Thomas started in center field and went 0-for-2 with an RBI in Wednesday's 5-4 loss to the Marlins.

EDGE Analysis

Thomas made his first start since Saturday, a stretch that included one righty and two lefty opposing starters. He was eventually removed for a pinch hitter in the sixth inning against lefty reliever Tanner Scott. The outfielder is 1-for-33 (.030) against southpaws, and it appears to be costing him at-bats. His underlying numbers suggest bad luck, but he's noticed pitchers are attacking a weakness, balls on the outside part of the plate, per Theo Mackie of the Arizona Republic. "That's all they're doing is painting away, painting away," Thomas said. "It's probably a good idea. If they bring it somewhere in the zone, I feel like I'll be able to hit it." Overall this season, Thomas is slashing .196/.259/.333 over 112 plate appearances.

Thomas remains out of the lineup Tuesday against the Marlins.

EDGE Analysis

Thomas hasn't appeared in the Diamondbacks' starting lineup since Saturday and he will take a seat again Tuesday with left-hander Jesus Luzardo toeing the slab for Miami. Thomas has tallied only one hit -- a single -- in 34 plate appearances this year versus southpaws.