Marquez joined the Union via the 2014 MLS SuperDraft, where he was selected No. 44 overall. A former Division III player out of the University of Redlands, Marquez has made his mark in MLS after an impressive rookie campaign with 20 starts in 2015. He's also a USL success story after starting 28 games and leading Harrisburg City Islanders to the league championship in 2014.
2016 (Union): Marquez made his 2016 debut in the Philadelphia Union's second match against Columbus Crew SC. He has since started and played all 11 games on the back line. He was able grab his first MLS goal in a game against DC United. He scored a stoppage time winner on a half volley to lift the Union to the top.
2015 (Union): Marquez made his MLS debut by coming on as an injury replacement for Michael Lahoud in the 6th minute against Toronto FC on May 2. Despite it being his debut against international stars Sebastian Giovinco and Jozy Altidore, Marquez anchored the defense and limited to Toronto to one goal, which came off of a set piece. He finished the year starting 20 of the final 24 league games for the team, and was on the field for a team-high eight clean sheets. Finished the year with 21 league appearances and 20 starts.
2014 (Union): Did not appear in League action, but played an integral role in leading the Harrisburg City Islanders to the USL Pro Championship game while on loan. He led the USL Pro in minutes played (2,520) by playing the full 90 minutes in 28 games.
2013 (Univ. of Redlands): Marquez started all 16 matches he played in as team compiled a 12-4 record (six shutouts) was voted SCIAC Player of the Year.
2012 (Univ. of Redlands): Started 20 matches. Marquez led a defense that recorded eight shutouts. He also contributed on the offensive side by scoring two (2) goals and registering one (1) assist. Named First Team All-SCIAC. Proved to be an aerial threat by scoring two goals while dishing out one assist
2011 (Univ. of Redlands): Helped Redlands to Sweet 16 of NCAA tournament (two goals, two assists). Marquez helped the defense hold opposing attacks to a GAA of 0.58. Marquez was a major reason the Bulldog squad won a team-record of 16 games. Marquez was named to First Team All-SCIAC.
2010 (Univ. of Redlands): An instrumental defender for the 2010 SCIAC Champion Bulldogs. Started all 18 matches and helped Redlands capture a 10th conference championship.
Was selected by the Philadelphia Union with the No. 44 pick in the 2014 SuperDraft.