Smith was promoted from Single-A Myrtle Beach to High-A South Bend on Tuesday.

The 14th overall pick in this year's draft, Smith hit .313 with six homers in 15 games at Single-A, so it was time for more of a challenge. He's hitting .500 with one double, two strikeouts and one walk in two games at High-A.

Vientos isn't in the Mets' lineup for Thursday's game against the Diamondbacks.

Vientos will get a chance to rest Thursday after slashing .256/.273/.442 with two homers and seven RBI over his last 10 games. Jose Iglesias will take his place at the hot corner and bat seventh.

Schunk went 2-for-3 with a solo homer and a walk in Wednesday's win over the Marlins.

The 27-year-old walked in his first trip to the plate and advanced to second on an infield single from Charlie Blackmon, but the infielder would be left stranded after the next three batters went down in succession. Schunk came up big in his second at-bat, however, launching a 429-foot solo homer in the fifth to put the Rockies on top 3-2. He went on to reach three times in the contest while logging his third multi-hit performance of the campaign. It also marked Schunk's first long ball of the season, and he's now recorded an RBI in each of his last two starts.

Monasterio went 0-for-1 with a walk, a stolen base and a run scored in Wednesday's 5-3 win over the Giants.

Monasterio has seen little playing time while occupying a short-side platoon role since the All-Star break. He's gone 5-for-22 over his last 14 contests while serving as an infield depth option. For the year, he has a poor .208/.322/.277 slash line with one home run, six steals, 12 RBI and 13 runs scored over 118 plate appearances.

Urshela is not in the lineup for Wednesday's game in Minnesota.

Urshela had made eight straight starts after joining Atlanta's roster Aug. 20 but will get a breather during Wednesday's series finale. Luke Williams is receiving a rare start at third base.

Marte is out of the lineup for Wednesday's game against the Athletics.

Marte has struggled mightily at the plate overall since completing his 80-game suspension to begin the season and joining the Reds in late June, though his bat has been starting to come around lately. Over his last six contests, Marte has gone 7-for-21 with a home run and two stolen bases, bringing his batting average back to the Mendoza Line (.200) on the season. Despite the recent surge, Marte will cede his spot at third base to the even hotter-hitting Santiago Espinal, who has pushed his way into an everyday role for the Reds while seeing action at a number of different positions.

Machado went 1-for-4 with a solo home run in a 7-5 win against the Cardinals on Tuesday.

Machado ended a nine-pitch at-bat with a solo home run in the second inning to put the Padres on the board. It was the slugger's second long ball in as many games and his sixth home run through 23 contests in August. Machado is at 22 homers on the season, so he'll need to stay hot down the stretch to get to 30 home runs for the third straight campaign.

Hayes' back injury is still being evaluated and there remains no timetable for his return, Noah Hiles of the Pittsburgh Post-Gazette reports.

The third baseman has been on the 10-day injured list on two occasions this season with back problems and the Pirates are still trying to get a better handle on the injury. Hayes is expected to return at some point during September, but his timeline lacks specificity. The 27-year-old is sporting a lowly .233/.283/.290 batting line this season.

Chapman went 3-for-4 with a solo home run and an additional run scored in Tuesday's 5-4 win over the Brewers.

Chapman tied the game at 2-2 with his fourth-inning blast. The third baseman had gone just 1-for-15 over his previous four contests before breaking out of that short slump Tuesday. He's up to a .246/.333/.443 slash line, 21 homers, 64 RBI, 87 runs scored and 13 stolen bases over 130 games this season.

Arenado is out of the lineup for Tuesday's game against the Padres, Jeff Jones of the Belleville News-Democrat reports.

Arenado is absent from the starting nine for the first time since July 30 for what appears to be a maintenance day. The third baseman will yield to Jose Fermin at the hot corner.