Illinois state had two 3-point attempts on the final possession after Key's free throws with 12 seconds to play.
Jake LaRavia had 16 points for Indiana State (7-7, 4-5 Missouri Valley Conference). Tre Williams added 13 points, including the 3-pointer that put the Sycamores on top 65-63 with 1:13 to play. Cooper Neese had 12 points and seven rebounds.
Lance Jones scored a season-high 25 points for the Salukis (7-4, 1-4), who have now lost four games in a row. Jones had the clutch 3 before Key's last two free throws. Kyler Filewich added 12 points. Steven Verplancken Jr. had 11 points.
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