Miller played college basketball for Letran, where he was highly promoted in the national media as a future PBA superstar.

With Miller parading the Patriots, he was ranked second in the league in scoring averaging 23.6 a contest and made it to the MBA First Five.

In his first season, Miller was playing the backup role to Jimwell Torion at point guard but was able to contribute solid numbers in his PBA debut.

He played a key role in Red Bull's 2001 Commissioners Cup championship upset of the San Miguel Beermen.

In Game 5, he made a last-second block on Beermen import Nate Johnson to preserve the Thunder's victory, and a 3–2 series lead.

After an impressive performance against the RP-Hapee Training Pool in which he single-handedly led Red Bull to an overtime win over the Nationals, Miller performances alongside the impressive play of teammate Davonn Harp led to Red Bull's second PBA title in the 2002 Commissioners Cup.

Miller continued to play his usual performances in the 2003, making it to the Mythical Team for the second straight season.

He was named the 2005 PBA Fiesta Conference Best Player after another strong performance leading Talk 'N Text to the best record during the tournament.

This time, Miller's backcourt partner would be Mike Cortez and with them, Jeffrey Cariaso, Sonny Thoss, and Reynel Hugnatan, the Aces took third-place honors during the conference after falling a game short against Purefoods for a finals berth.

Miller also played the hero in Game 5, where he scored 15 points, including an emphatic (and somewhat ill-advised) game-clinching three-pointer with 8.7 seconds remaining.

Ginebra amassed an impressive 10-4 card but it was only enough for 3rd place if only Miller did not turned the ball at least once in 3 out of there 4 games they could have avoided Alaska and gain Twice-to-beat Advantage.

As the season went through, Miller's minutes winded down due to the rising of then rookies John Wilson and Robert Labagala as well as the return of Mark Caguioa's superstar game.

[2] His role in the team is more of a mentor to young guards and a voice in the locker room, though he can score and make plays for his teammates whenever he needs to.

He played well for the Philippines in the FIBA Asia tournament and participated in the William Jones Cup in Taiwan, when the country finished third.