Tyler Johnson, who is coming back from shoulder surgery last year when he was playing with St. Louis, is still in Peoria, Ariz., working out in extended spring training. He's scheduled to throw a simulated game Tuesday, after which he could go on an injury rehabilitation assignment. The club could see him back by the end of the month.

Chad Cordero, also at the spring facility in Peoria, is set to throw in Tuesday's simulated game, too. However, he has more of those to come in the wake of surgery to repair a torn labrum last July 8. Still, he's getting closer and could be back next month.

Johnson and Corder are significant because of their history. Johnson was an up-and-coming pitcher with the Cardinals from 2005-07 before a bout with bursitis ultimately led to surgery. In the 2006 playoffs, he helped the World Series champion Cardinals by appearing in 10 postseason games, striking out 12 in 7 1/3 innings. He held left-handed hitters to a .221 average that season, and held all hitters to a .217 average in 2007.

Cordero was an All-Star with the Nationals in 2005 (47 saves) and had 113 saves in 2005-07 before needing his shoulder worked on.

Meanwhile, Cesar Jimenez is out on an injury rehabilitation assignment and could be back sooner than either from his bout with left biceps tendinitis.

And Roy Corcoran, on the disabled list with strained neck, is due to resume throwing this weekend.