After Billy Horschel’s AT&T Byron Nelson title win on Sunday afternoon, the golfer became emotional during an interview.

Now we know why.

After his win, Horschel was asked what his own challenges were that triggered a visibly emotional response.

“Life gets in the way sometimes, and it’s truly special to be winning on something on a day like this,” Horschel said Sunday afternoon, according to ESPN. “Honestly, I’m not able to talk about it right now. But it’s just a lot of stuff happened in the last year, and this is just -- this is nice.”

Horschel’s wife, Brittany, took to Twitter on Monday afternoon to provide insight into their family life over the past year.

“One year ago, I began a journey to a healthy me; mentally and physically. I will keep this simple, ‘I am an alcoholic.’ I say that now without shame ... I spent the end of May through July last year in a treatment center in South Florida receiving the life tools that help me win against my disease every day. During that time, Billy had to take on the 100 percent responsibility of taking care of our then 1 1/2 year-old daughter, moving us into a new home, competing on tour and God only knows what else and what all went through that man's head during that time,” Brittany Horschel wrote in part.

Horschel praised her husband for his unselfishness and love during the past year and revealed the weekend of her husband’s title win marked one-year sobriety.

Below is a video of Horschel’s daughter Skylar celebrating her father’s win on Sunday.