He is an assistant coach for the NLEX Road Warriors of the Philippine Basketball Association (PBA).

[2] Monfort won three championships during his collegiate career with the Ateneo Blue Eagles in the UAAP from 2009 to 2011.

[4] When he was in Grade 5, he watched the 2000 PBA All-Star Game, held in his hometown of Iloilo, and met Danny Seigle, which inspired him to pursue basketball.

[16] For Season 73, with Reyes graduated from college, Monfort succeeded him as Ateneo's starting lead guard.

[18][17] He then scored a college career-high 23 points with five triples while also providing five assists, four steals and four rebounds in a win over the UP Fighting Maroons.

[20] In Game 2 of the Finals, he scored 10 points as Ateneo won its third straight title thanks to a game-winning three-pointer from Ryan Buenafe.

[23] The Eagles began Season 74 with a win over Adamson in which Monfort made two clutch free throws with 16.3 seconds remaining to seal the victory.

[28] Ateneo had a chance to sweep both elimination rounds but in their final game of the season, they lost to Adamson.

[3] With 19 seconds left in the game, he split his free throws to give Barako a three-point lead.

[35] In that game, he only had three points (all coming from the free throw line), but had a team-high five assists, two rebounds, and a steal as well.

On October 31, 2013, he was traded to Barangay Ginebra San Miguel to bolster their backcourt, sending Robert Labagala to Barako Bull.

[40] In a 2013–14 Philippine Cup win over the Talk 'N Text Tropang Texters, he didn't score a point, but made an impact on the game with two rebounds and five assists.

He then played 24 minutes in a win over the Alaska Aces and contributed five rebounds (including two offensive), five assists and two steals.

On August 25, 2015, he was traded to Barako Bull Energy with Josh Urbiztondo and Jens Knuttel in exchange for Nico Salva and a future first-round pick.

[44] Before the start of the 2016 Governors' Cup, Monfort and Mac Baracael were traded by Phoenix to the NLEX Road Warriors for Simon Enciso, a 2018 Draft second round pick and Mark Borboran.

[50] In 2021, it was announced that he and Borgie Hermida would be coaching the Cavitex Braves, the PBA 3x3 affiliate of NLEX.