Totally anecdotal, but I was better than average at the sports I did. (Not a star, but I always made the all-star team.) Generally my sports were ones that required more strategy and less physical prowess. I was good at softball and volleyball, but lousy at basketball because it didn't allow much time for me to analyze the plays--I just had to react.
OTOH, softball and volleyball allowed me to analyze where players were standing or how they were positioned and respond accordingly. I was always the "coach on the field" in these sports, whispering what I saw to my teammates: "Shift toward third because her body is turned more than it was last time she batted," or "She can't hit with her left hand. Block closer to the middle and give up the line shot. She can't make it."
I can already see the same thing with DS7. He's one of the better players on his soccer team, mainly because he understands where he is supposed to be and can recognize the patterns of plays developing.
I think people often underestimate how much of sports--especially at the recreation level--is pattern recognition. Getting a one-step jump on a grounder because you knew the batter was going to pull the ball toward left field can make a big difference in how you play.
