Gillies ended with three wickets for 58, and 20 runs, as the Warriors beat the South African national team by an innings and 48 runs.
In the Eastern Division Finals the Warriors beat the Syracuse Nationals in 5 games.
The Warriors beat the Knicks for the second time this season, and they became the only team New York has been unable to beat this season.
It was Sampson's first start since March 9, when the Warriors beat the Cleveland Cavaliers.
Clyde Drexler added 31 points and 10 rebounds as the Trail Blazers beat the Warriors, 130-116.
The Warriors beat them 2 games to 1.
The Warriors beat the previously unbeaten Chargers, 23-6.
His breakthrough game came in November 2006, when the Warriors beat the title favorites San Antonio Spurs 119-111.
The most recent defeat was to Merrimack last Friday, the first time in 29 games dating to 1980 that the Warriors had beaten the Black Bears.
If the Warriors beat Washington and stay in the top 12, they are guaranteed a BCS at-large bid.