Vitale's weekly stock watch
• Kobe Bryant received a three-year contract extension from the Lakers.
• Evan Turner was named Naismith Award winner and AP men's college basketball Player of the Year.
• The Miami Heat have won eight straight, behind Dwyane Wade.
• Andy Roddick beat Rafael Nadal en route to the championship at the Sony Ericsson tournament in Florida.
• Kim Clijsters beat Venus Williams, 6-2, 6-1 at that same event.
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