Winning is not a bad habit, according to Charlie Fenwick Jr.

The 32-year-old Baltimore auto dealer kept up that habit with back-to-back victories today in the My Lady's Manor point-to-point and the John Rush Streett Memorial steeplechase races.

Fenwick won the British Grand National at Aintree on Ben Nevis two weeks ago and took first place on Dosdi a week later at Davidsonville, Md. Today, he guided Sam Son of a Gun to a four-length victory in the 70th running of the three-mile $5,000 Manor race.

The 7-year-old bay gelding, owned by Wallace Lanham Jr., exchanged leads with Tong, ridden by Turney McKnight, after early leader Double Antix with Joy Slater up, fell at the 12th of 16 fences.

Sam Son of a Gun swiftly pulled away from Tong after the pair jumped even at the final fence to breeze down the stretch in 6 minutes, 20 seconds. Tong was second with Liquid Consolation, ridden by Robert Sloan, a half length back for third place.

Fenwick returned in the 56th running of the $2,000 Streett Memorial, the second of two races on the day's card, to score an eight-length victory aboard Treasure Island.