Navigating through 40-man confusion

I've warned you that math isn't my thing, and it challenged me again this week during the flurry of 40-man roster moves. It reminded me of the ol' shell game. Guys were moving on and off the roster so fast, my eyes began to cross. I thought Mark Hendrickson's addition after his 48-hour removal, and the Michael Gonzalez trade, left the Orioles without any more room for an outsider. I had Hendrickson pegged as the 40th. Mike Ballard and Mitch Atkins came off, Kyle Hudson and Rick VandenHurk came on. Still 40 by my count. Newcomer Pedro Strop, obtained from the Rangers in the Gonzalez deal - cash from the trade was put toward the waiver claim - looked like No. 41, but he actually puts the Orioles at their limit. No corresponding 40-man move is necessary. I checked with three people in the organization. I was able to count that high without becoming confused. Players on the 60-day disabled list - Brian Roberts, Jake Arrieta and Luke Scott - no longer are included on the 40-man. The Orioles might need to make space later this month. President of baseball operations Andy MacPhail didn't dismiss the possibility that another contract could be purchased from the minors. He's waiting for status updates on Chris Davis, Cesar Izturis and Jason Berken, who remain on the disabled list. Third baseman Josh Bell, who's on the 40-man, is a candidate to be recalled. Here's the current 40-man roster: Pitchers: Brad Bergesen Jason Berken Zach Britton Dylan Bundy Willie Eyre Kevin Gregg Jeremy Guthrie Mark Hendrickson Tommy Hunter Chris Jakubauskas Jim Johnson Brian Matusz Troy Patton Zach Phillips Jo-Jo Reyes Alfredo Simon Pedro Strop Chris Tillman Rick VandenHurk Pedro Viola Catchers: Jake Fox Craig Tatum Matt Wieters Infielders: Ryan Adams Robert Andino Josh Bell Blake Davis Chris Davis Pedro Florimon J.J. Hardy Cesar Izturis Joe Mahoney Mark Reynolds Brandon Snyder Outfielders: Matt Angle Kyle Hudson Adam Jones Nick Markakis Nolan Reimold Designated Hitter: Vladimir Guerrero