The Nationals Ryan Zimmerman will land on the 15-day disabled list with an abdominal muscle strain, an injury he dealt with during spring training.  He aggravated the injury sliding into second base over the weekend. Zimmerman has a .486 on-base percentage along with a .536 slugging percentage over eight games this season.

While Ryan could return from the DL on April 24th, Adam Kilgore of the Washington Post writes that Zimmerman will miss more time than that.  The Nationals are expected to recall a player from Triple-A Syracuse, but Jerry Hairston and Alex Cora will see a bulk of the playing time at third base going forward.  There's also a possibility that Mike Morse could see some time at third, as he played the position in the minor leagues.

With Ryan out of the lineup, Jayson Werth will likely slide down from the second spot in the order to the third spot, with Adam LaRoche remaining in the cleanup spot.  Rick Ankiel could see an extended look at the second spot in the order, the spot he was penciled into on Sunday afternoon with Ryan out of the lineup for the first time.

J.J. Hardy, the newly acquired shortstop for the Baltimore Orioles, was placed on the 15-day disabled list with an oblique strain.  Much like Zimmerman, Hardy is expected to miss between two and three weeks of action, but it could be longer given the nature of the injury.  Hardy was hitting .200/.294/.400 over 15 at-bats this season.

With Hardy out, the Orioles will turn to last year's full time shortstop, Cesar Izturis.  Izturis, along with Robert Andino, will handle the shortstop duties, allowing the team to bring up another bullpen arm.

Blue Jays outfielder Rajai Davis aggravated his right ankle injury over the weekend against the Los Angeles Angels and was placed on the 15-day disabled list.  However, the Blue Jays caught a break - sort of.  Corey Patterson, who had been sidelined after being hit with a pitch in the head from Boston's Daniel Bard, was activated from the DL and will start in center field.  The team also called up utilityman Mike McCoy to provide another bat off the bench.

With Davis out of the leadoff spot for the Jays, Yunel Escobar will receive first crack at the top spot in the order with Patterson following in the second spot.

Dodgers shortstop Rafael Furcal is expected to miss significant time after breaking his left thumb stealing third base against the San Francisco Giants Monday night.  Furcal, 33, has been dealing with a injury to his left wrist to start the season and has missed time before due to his back and shoulder.  MLB.com's Ken Gurnick reports that Furcal could miss four to six weeks, but will know more after he visits with a hand specialist.

Veteran middle infielder Jamey Carroll likely becomes the starting shortstop for the Dodgers moving forward, with the team recalling Ivan DeJesus as depth for the bench.  With Furcal out of the leadoff spot, Tony Gwynn becomes the likely candidate to hit from the top spot, with Casey Blake or Carroll hitting second in the order.

Jake Peavy of the Chicago White Sox continues his road back to the big leagues after being setback in spring training with rotator cuff tendinitis.  The 29-year-old Peavy has made one minor league rehab start thus far and is expected to make two more before returning to the White Sox.  During his first rehab outing at the Double-A, Peavy tossed 72 pitches over 3 2/3 innings.  In addition to his outing, he threw a 32-pitch bullpen session and has is reportedly pain free.  If Peavy continues to pitch pain free, he could return to the White Sox near the end of April.