In case you're unfamiliar with the Stadlers, here's a crash course: Craig won 13 PGA Tour events, including the 1982 Masters. He's 60 now and plays a pretty full schedule on the Champions Tour (22 times in 2013, one win). His son, Kevin, turned pro in 2002. After a few years bouncing between the PGA and Nationwide Tours, Stadler has been a full PGA Tour member since 2007, with his first victory coming last week in Phoenix.
Also, they're really similar. Just look at their golf swings. Both produce consistent baby fades as a result of a slight over-the-top swing path.