07/07/2002 11:00PM

Xtra Heat works half-mile

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MIAMI - Xtra Heat worked a half mile in 49.20 seconds at Laurel on Monday in her final major prep for Saturday's $400,000 Princess Rooney Handicap at Calder. The Princess Rooney is one of four sprint stakes on the $1.4 million Summit of Speed card.

Harry Vega, who will ride Xtra Heat in the Princess Rooney, was aboard for Monday's work for trainer John Salzman Jr. Xtra Heat is scheduled to arrive at Calder on Thursday morning.