Vaughn is out of the lineup for Monday's game against the Phillies.

After going just 5-for-30 (.167 average) with two walks while starting in each of the past eight games, Vaughn will exit the lineup and receive a mental reset as the Brewers kick off a three-game set with the Phillies. Jake Bauers will fill in for Vaughn at first base.

Burleson (wrist) was spotted playing catch on the field prior to Monday's game against the Athletics, Derrick Goold of the St. Louis Post-Dispatch reports.

St. Louis placed Burleson on the 10-day injured list Friday due to right wrist inflammation, but after getting an injection to relieve discomfort, he's already started throwing again. Burleson remains hopeful to be activated from the IL around when he's first eligible to return Sept. 8.

Bernabel (knee/quadriceps) remains out of the lineup for Monday's game against the Giants.

Bernabel will miss a second straight start after exiting Saturday's 4-3 loss to the Cubs with a bruised left knee and quad. He is considered day-to-day. Orlando Arcia will cover first base and bat ninth for the Rockies in Bernabel's stead.

Reds manager Terry Francona said that Steer is not in Monday's lineup versus the Blue Jays in part due to a nagging leg injury that's bothered the player for two months, Charlie Goldsmith of Fox 19 Now Cincinnati reports.

The injury doesn't sound like anything that will keep Steer out more than a day or two, but the call-up of top prospect Sal Stewart -- who is making his major-league debut Monday at first base -- allows Steer to get off his feet for a day. Consider Steer day-to-day.

Johnston is out of the lineup for Monday's game against the Nationals.

The Nationals are sending lefty Andrew Alvarez to the hill for the series opener, so Johnston will head to the bench along with another lefty-hitting lineup regular in Liam Hicks. Johnston closed August with a .293/.328/.414 slash line, one home run, one stolen base, seven RBI and five runs over 23 games.

Steer is absent from the lineup for Monday's game versus the Blue Jays.

Steer will yield first base to Sal Stewart, who was called up from Triple-A Louisville to make his major-league debut. Stewart could bounce around to a few infield positions as well as designated hitter in order to get his bat in the lineup, but Steer should still man first base most days for the Reds. Steer had started each of the last 10 contests before sitting out Monday.

The Reds selected Stewart's contract from Triple-A Louisville on Monday. He will start at first base and bat sixth in the Reds' series opener versus the Blue Jays.

Stewart has been a consistent producer throughout his minor-league career, and he started getting to more over-the-fence power in his age-21 season. He slashed .309/.383/.524 with 20 home runs, 17 steals and a 15.6 percent strikeout rate in 118 games across Double-A Chattanooga and Triple-A. Stewart is capable of playing second, third and first base and should get regular work down the stretch. He's more of an average runner than a plus runner, so his speed may not translate in September, but Stewart's hitting ability, role and home park make him a worthwhile roster addition in fantasy.

The Reds plan to call up Stewart from Triple-A Louisville on Monday, Jon Morosi of MLB Network reports.

Regarded as one of the top position prospects in the organization, Stewart began the season at Double-A Chattanooga, with whom he posted an .850 OPS en route to earning a promotion to Louisville following the All-Star break. The 21-year-old has been unfazed by the jump in competition, as he's slashed a sizzling .315/.394/.629 with 10 home runs and four stolen bases in 38 games with Louisville to make his way to the big leagues. During his time at Triple-A, Stewart has mostly played third base, but he's also gotten some exposure to first base and second base. The keystone could prove to be Stewart's primary avenue to playing time to begin his big-league career, as Matt McLain has been serving as the Reds' main option at that position but has provided a middling .222/.302/.343 slash line over 122 games.

Hernandez is out of the lineup for Sunday's game against the Diamondbacks.

Hernandez will head to the bench Sunday after he had started in each of the last four games -- three at third base, one at first base -- while going 4-for-14 with three RBI and two runs. The Dodgers should be able to find regular room for Hernandez in the lineup against left-handed pitching during the final month of the season, but the right-handed-hitting utility player could find playing time versus righties more difficult to come by in September. Los Angeles is expected to get Hyeseong Kim (shoulder) back from the injured list ahead of Tuesday's game in Pittsburgh, and Tommy Edman (ankle) looks to be on the cusp of a rehab assignment and will soon give the Dodgers another utility option.

Bernabel (knee/quadriceps) is out of the lineup for Sunday's game against the Cubs.

Bernabel exited Saturday's 4-3 loss due to a knee and quad bruise, and he'll be held out of the lineup for the series finale as a result. The 23-year-old should be considered day-to-day while Kyle Farmer receives a start at first base.