The New York Yankees claimed David Robertson off waivers, but the Chicago White Sox have pulled the reliever back.

The two clubs didn't have legitimate trade talks over the weekend.

The deadline to make a team's postseason roster is Monday, so additions are unlikely in September.

An unknown club has claimed Craig Kimbrel on waivers, according to a report by Ken Rosenthal of FOX Sports.

The San Diego Padres, however, have no intention of trading the reliever.

Kimbrel is earning $9 million as part of a four-year, $42 million contract extension signed with the Atlanta Braves.

Two more bullpen options may be available via trade as the deadline to make a postseason roster nears.

The Milwaukee Brewers have placed Francisco Rodriguez and the Baltimore Orioles have placed Darren O'Day on revocable waivers.

Both Rodriguez and O'Day were placed on waivers Wednesday, which means they should clear on Friday afternoon.

The Rangers have added left-hander Chris Rearick on a waiver claim from the Padres and assigned him to Triple-A Round Rock.

Texas also sent catcher Carlos Corporan to Double-A Frisco on Wednesday for his second rehab assignment since spraining his left thumb in July.

The San Francisco Giants are looking to add an outfielder, especially in the wake of Hunter Pence's oblique injury.

However, the Giants aren't solely looking for depth. They want someone to provide an offensive boost to the lineup.

Jose Reyes was placed on waivers by the Colorado Rockies and has cleared the process.

The Rockies can now trade Reyes to any team. They acquired the shortstop as part of the package received from the Toronto Blue Jays for Troy Tulowitzki.

It is being reported that "at least a couple of teams" have been "poking around" regarding Reyes, but it remains to be seen if Colorado is motivated to move him.

The Boston Red Sox have traded Mike Napoli to the Texas Rangers along with cash in a waiver deal.

The Red Sox will receive a player to be named later or cash in the trade.

Napoli played two seasons with the Rangers, in 2011 and 2012, before joining the Red Sox as a free agent.

The Milwaukee Brewers will place Kyle Lohse on revocable trade waivers in the hope that someone will claim the remainder of his contract.

Lohse has $3.55 million left on his salary for 2015.

The Chicago Cubs would like to add pieces for the stretch run during the August waiver period, but Jed Hoyer believes that doing so could be tougher than some other years because of parity this season.

"There's a lot of teams that are vying for the playoffs, so I think that'll probably mean a little bit more blocking than usual," Hoyer said. "There'll definitely be deals. Whether those will be big deals or not, I would probably say no, simply because I do think people are pretty active on the waiver wire and there'll be quite a bit of blocking."

Players are routinely placed on revocable waivers in August. Those who clear can then be traded freely by their clubs. If a player is claimed, the player’s team has 48 hours to trade him or pull him back off waivers – in which case, he can no longer be traded during the period.

"Certainly we're spending a lot of time every morning on the waiver wire and making our claims," he said. "But a lot depends on who happens to clear."

The Tampa Bay Rays have claimed Daniel Nava off waivers from the Boston Red Sox.

Boston had designated the 32-year-old for assignment on July 30th.

Nava has spent most of his time in the corner outfield, though he also has appeared some at first base. He was hitting .152/.260/.182 in 78 plate appearances for the Red Sox.