After emerging as one of the Oakland Athletics' key players in 2011, Scott Sizemore reported to last year's camp in Arizona primed to take another major step forward. Unfortunately, that day at Papago Park in Phoenix, Arizona he ended up taking a seemingly innocent step that cost him an entire season of his career.

That one routine step on the field resulted in a torn anterior cruciate ligament in his left knee. It was a freak occurrence.

"When the injury happened I was just kind of shocked because I've done a movement like that a million times and nothing has ever happened," Sizemore said. "So to have that kind of injury on a simple play I was a little shell shocked."

Sizemore missed the first full squad workout again this year. Only this time, it was a step in the right direction. Two days before the A's first 2013 workout, Sizemore and his wife Brooke welcomed their first child, Layla, into the family. She entered the world at six pounds nine ounces, and measured 19 inches long.

"I can't even describe it still," Sizemore said. "It's like an overwhelming feeling of responsibility and love."