Mack Lobell equaled a world record for 3-year-old trotting colts on a half-mile track by winning the $142,455 Colonial Trot at Rosecroft Raceway last night in 1:57 2/5. Sir Taurus also trotted that time at Yonkers Raceway on July 13.

The time was a Rosecroft record. Mack Lobell set the track's previous mark of 1:58 2/5 last week in a tuneup for the Colonial.

The anticipated duel between Mack Lobell and Napoletano never developed as Napoletano broke stride just past the three-eighths-mile pole.

Mack Lobell, the favorite, was bet down to 2 to 5 and Napoletano went off at 6 to 5.

The start of the race went as expected as John Campbell quickly moved Mack Lobell out to an early lead along the rail. Mack Lobell was never pressured after gaining the lead.

Napoletano, driven by Bill O'Donnell, seemed off form from the start. O'Donnell moved the colt out quickly, but was parked outside. When O'Donnell tried to move Napoletano to the rail past the three-eighths pole, the colt broke stride -- thus ending his nine-race winning streak. Napoletano, who had defeated Mack Lobell the last three times the colts had met, finished last.

Mack Lobell and Campbell were racing easily as they hit the half-mile pole in a good 58 1/5 seconds. Mack Lobell kept pulling away from the field going the three-quarters in 1:28 2/5 before covering the last quarter in 29 seconds.

Beseiged, with driver Per Henriksen, did little in the race but tag along behind Mack Lobell, but that was good enough to net him second, four lengths back. Super Speedy, driven by Tommy Haughton, took third.

Mack Lobell's performance last night might have clinched harness horse-of-the-year honors. Earlier this year, Mack Lobell captured the Hambletonian and Yonkers Trot. In addition, he became the fastest trotter in racing history this summer when he won in 1:52 1/5 in Springfield, Ill.