Albany Attack/San Jose Stealth Miller started his career in 2001 with the
Albany Attack (renamed the
San Jose Stealth after the team relocated to
California). He spent the early part of his career backing up
Rob Blasdell and
Anthony Cosmo, before joining the
Chicago Shamrox and earning a spot as their starting goaltender.
Chicago Shamrox Chicago selected Miller first overall after San Jose left him unprotected in the 2006
expansion draft (when Chicago and the
New York Titans joined the league). At the 2007
All-Star Game in
Portland, Miller was named to the All-Star team for the first time, as a reserve for the East squad. He split time with
Matt Roik, allowing eight goals on 34 shots to earn the win. He also assisted on one of the East team's 20 goals. Despite Miller's stalwart play in net - 557 saves, facing an average of 45.19 shots per game - the Shamrox scored the third-fewest goals in the league in 2007, and missed the playoffs with a 6–10 record.
Philadelphia Wings Midway through the 2008 season with the Shamrox struggling, Miller was dealt to the
Philadelphia Wings for Roik and defenseman Brad Self. In 2008, Philadelphia finished 10–6, and qualified as the fourth seed for the playoffs; the Shamrox finished 6–10, in last place in the East Division. The Wings took on the
Buffalo Bandits in the first round of the playoffs, but were eliminated after a 14–12 loss. Miller replaced starting goaltender Rob Blasdell for the second half of the game, allowing five goals on 21 shots and picking up the loss. Miller split time with Blasdell again in 2009, his first full season with Philadelphia. Miller played about 60 per cent of the team's minutes, registering an 11.90 GAA and 76.94% save percentage. He also contributed offensively, registered six points - including a goal on March 28, 2009, against the
Colorado Mammoth. The team, however, struggled, finishing the season 7-9 and missing the playoffs. Philadelphia again missed the playoffs in 2010, finishing last in the East division with a 5–11 record. Miller earned the lion's share of the playing time (a career-high 885 minutes), and as a result, faced the most shots in the league (764) and made the second-most saves (581). Offensively, he contributed 9 assists, good for second in the league behind Cosmo's 13. Miller had, perhaps, his best statistical season in 2011. He posted career bests with an 11.25 goals against average and .774 save percentage. The team was plagued by a lack of goal scoring, though, finishing with a league-worst 143 goals for, finishing 5–11, tied for last in the league. Miller was selected for the All-Star game for the second time in his career. The Wings made the playoffs in 2012 and again in 2013, but, unfortunately, were knocked out in the first round both years. In 2013, Miller finished second in Goaltender of the Year voting, behind Rochester's
Matt Vinc. He finished fifth in saves for the season, and crossed the 4000-save mark for his career, becoming the 10th goaltender to achieve the mark. He was also named Defensive Player of the Week three times during the season, and was named to the Second All-Pro Team.
Toronto Rock On March 18, 2014, Miller was traded to the Toronto Rock for Kyle Belton, a conditional 2nd-round draft choice and a 4th-round draft choice in the 2014 NLL draft. The Rock finished the season 9-9 and qualified for the playoffs, but were eliminated in the first round. The
2015 season saw Miller split time with Nick Rose; Rose and Miller finished 3rd and 4th, respectively, in the league in Goals Against Average. The Rock finished with a league-best 14–4 record, and allowed the 3rd-fewest goals in the league. Miller was a finalist for the
Goaltender of the Year Award and made his first trip to the finals, where the Rock were beaten 2 games to 0 in the Best-of-3 series by the
Edmonton Rush. In
2016, Miller became just the
seventh NLL goalie to register 5,000 career regular season saves. On September 25, 2018, Miller announced his retirement as a player. He will be joining the
Toronto Rock coaching staff as goaltending coach ==Ontario Lacrosse Association==