West tallied 28 points while Hill contributed 23 with six assists for the surging Central Division leaders.
Indiana's Paul George added 21 points with 11 rebounds and Roy Hibbert had 13 points, nine boards and five blocks before being ejected.
The Warriors got 38 points from Stephen Curry but still saw their three-game winning streak snapped.
David Lee registered a double-double of 12 points and 12 boards for the losers.
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