Xtra Heat, who beat the boys in the Oct. 6 Phoenix Breeders' Cup Handicap (gr. III) at Keeneland, arrived at Arlington Park, the site of the Oct. 26 Breeders' Cup World Thoroughbred Championships, on Sunday and is resting comfortably in her new surroundings. The 4-year-old champion daughter of Dixieland Heat stamped herself as a primary contender for the Breeders' Cup Sprint (gr. I) when she scored a three-length victory over Day Trader as the 120 pound highweight in the Phoenix Breeders' Cup. Xtra Heat is only the fourth filly or mare to win the 150-year-old Phoenix. Xtra Heat left Keeneland around 8:30 a.m. Sunday morning and arrived at Arlington around 1:30 p.m., according to groom Javier Cruz who made the trip with her."She cooled out well and ate up well Saturday night," said Cruz. "She will probably have three days off and may go to the track here on Wednesday. That's her usual schedule."Xtra Heat has won 24 of 31 career starts, including 23 in stakes company to earn $2,223,305. She finished a half-length behind champion sprinter Squirtle Squirt in last year's Breeders' Cup Sprint.