Monica Seles attack shocks tennis world

When Monica Seles was attacked by a deranged fan during a match in 1993, it changed not just the tennis world but the entire relationship between athlete and fan. It also altered the course of tennis history -- Seles would fall from her lofty perch atop the sport and Steffi Graf would rise to become the world's dominant player. What do you think is the legacy of the attack on Seles?

The Gretzky Trade

Twenty years ago, the Edmonton Oilers did the unthinkable when they dealt Wayne Gretzky to the Los Angeles Kings for two players -- Jimmy Carson, Martin Gélinas -- $15 million and three first-round draft picks in a trade that would change the history of the NHL. The Oilers had won four Stanley Cups with The Great One and would win one more after his departure, but do you agree with their decision to part with Gretzky in the first place?

The Shot Clock, MJ, Magic & More

Combing through the entire history of the NBA and picking out the five most pivotal moments isn't easy. Legendary hoops writer Jack McCallum's top five begins with the advent of the shot clock in 1954 and includes a vintage performance by Magic Johnson and the drafting of Michael Jordan. Click here for his complete list and write in your own suggestions below.