99.9% Sure (I've Never Been Here Before)

"99.9% Sure (I've Never Been Here Before)" is a song by American country music recording musician Brian McComas. It was written by Billy Austin and Greg Barnhill and produced by Leigh Reynolds, and was included on his self-titled debut studio album (2003). It was released on March 10, 2003, via Lyric Street Records, as the third single from the album yet was the first single from the album in over a year.

The track proved to become McComas' biggest hit, hitting number ten on the US Billboard Hot Country Songs chart and number eight on the Radio & Records Country Top 50, becoming his only top ten single on both of the charts. It was also his only entry on both the Billboard Hot 100 and Hot 100 Airplay charts, peaking at numbers 57 and 54. McComas performed the song as part of his setlist as an opener on Rascal Flatts' CMT Most Wanted Live tour.