Morning Notes: Mo, Andy and the roster

TAMPA, Fla. -- Hard to believe but today is the final day of workouts before the Yankees start playing preseason games, beginning with tomorrow afternoon's game against the Braves in Kissimmee. Here's what happened this morning.

1. MO THROWS: Mariano Rivera took another step in his road back from knee surgery when he threw to hitters Kyle Roller and Rob Segedin in a 20-pitch live batting practice session. Mo was in a great mood, even calling his own strikes from the mound, and afterward declared the session "very good." More details coming later.

2. PETTITTE, TOO: Andy Pettitte preceded Mo and threw to Corban Joseph and Addison Maruszak. Looked good but no one spoke with him because Mo was up next. We'll check in with him later.

3. WHO IS THAT MASKED MAN: Why, it's Jorge Posada, of course, who made his first appearance in camp as a guest instructor. He stood behind the screen with Joe Girardi and Larry Rothschild during the live BPs and hasn't spoken to reporters yet.

4. WE'RE GOING TO DISNEY: As reported here yesterday, Mark Teixeira, Robinson Cano and Eduardo Nunez are making the trip to Kissimmee tomorrow, as well as Francisco Cervelli, Austin Romine, Dan Johnson and Matt Diaz. David Phelps will start and probably go two innings. Don't know who will follow him yet. Girardi will fill us in later.