Lookout Linkage, 3/22/15

Links!

• The Mariners have cut their Spring Training roster down to just 39 players.
• Months after the move, Tony Blengino at Fangraphs sees the reasoning behind the Billy Butler signing for the A's.
• A.J. Pierzynski is clearly not on Joe West's good side.
• Dave Cameron at Fangraphs thinks Christian Yelich and Mookie Betts are pretty similar players.
• The Atlantic League, an independent baseball league, will test out some pretty weird rules this season.
• MLB plans to have an exhibition game in Cuba in 2016.
• MLB added an interesting and cool wrinkle to the 2015 schedule.
• Trying to piece together likely Opening Day rosters? Here's a list of players who are out of options in 2015.
• Craig Edwards at Fangraphs notices that long relievers aren't as common as they used to be.
• Sean Dolinar of Fangraphs challenges the idea that there is a scarcity in right-handed power around baseball.
• The White Sox have signed outfielder Adam Eaton to a five-year contract extension.
• Justin Verlander has an interesting theory on why pitcher injuries are becoming increasingly more common.
• A pitcher at Oregon State University recently tossed a perfect game.