[3] Before high school, Erram joined a Milo Olympics tournament in his province, where he met coach Arvin Martinez.
[9][10] Ateneo's title dominance ended when they lost to the UST Growling Tigers and failed to make the Final Four.
He was among six Ateneo players taken in that draft, along with Chua, Greg Slaughter, Ryan Buenafe, Nico Salva, and Chris Sumalinog.
[14] The coaching staff, led by Leo Isaac and Bong Ramos, helped him to develop his offensive skills.
[17] In a 2015–16 Philippine Cup game versus the San Miguel Beermen, Erram scored 23 points, his career-high at the time.
[20] In a Commissioner's Cup loss to the Rain or Shine Elasto Painters, he scored 20 points.
Although they lost in overtime and failed to make the playoffs, he finished that game with 18 points and 13 rebounds.
[24] Nine months later, on May 31, 2017, during the 2017 Commissioner's Cup, Erram made his return to the court, playing six minutes.
[27] In a 2017–18 Philippine Cup win over Barangay Ginebra, Erram scored 21 points, 11 rebounds, and four blocks.
[30] Eight days later, Erram scored 14 points and grabbed a career-high 21 rebounds in a 84–88 loss to the Alaska Aces.
[15] After his stint with the national team after the Commissioner's Cup, Blackwater gave him a three-year max deal worth P15 million.
Their streak was snapped when he missed a game due to the flu and they lost to the NLEX Road Warriors.
[37] He was named by the PBA Press Corps as the Defensive Player of the Year for the 2017–18 season after averaging a league-leading 1.9 blocks.
[41] In his NLEX debut during the 2019 Philippine Cup, Erram had 10 points, five rebounds, and two blocks in a loss to Rain or Shine.
[42] He had five blocks again against the Columbian Dyip, but this time also scored 23 points, 10 rebounds, and six assists to lead NLEX to its first win of the season.
[46] In his first game against his former team Blackwater, he had a double-double of 20 points and 10 rebounds as he led NLEX to the win.
[48] In the first seven games of the Commissioner's Cup, Erram struggled with off-court issues and NLEX only won once.
Against Rain or Shine, he contributed 13 points, seven rebounds, and made the game-winning block on Denzel Bowles.
[59] In the 2021 Philippine Cup, Erram helped TNT claim first seed with 17 points and eight rebounds in a win over Alaska.
[63] TNT made it to the finals against the Hotshots where in Game 1, he only scored six points, but led the team with 12 rebounds and four blocks off the bench.
[40] In a 2021 Governors' Cup win over Rain or Shine, Erram had 15 points and nine rebounds, and also made two game-clinching free throws.
[69] In an overtime win over Rain or Shine, he scored six of his 13 points in the extra period, including a two-point basket that eventually gave TNT the lead.
[80] In Game 7, he got ejected in the second quarter after elbowing San Miguel's Mo Tautuaa in the head.
[81] Without him, and the team playing through multiple injuries, TNT lost the Philippine Cup title to San Miguel.
[82] Erram then missed the Governors' Cup elimination round of TNT due to a knee procedure.
[87] After the game, he informed officials that a fan had been heckling him with disrespectful insults about his mother, who had been going through a stroke.
[88] With Erram calling for better protection from the PBA, the league responded by adding more personnel in the venue to better police fan behavior.
[94] In 2016, he was invited to be part of the Philippine men's national team for the FIBA Asia Challenge Cup.
[102] As of the end of 2022–23 season[103] Erram is married to former Taal Vista Hotel events manager Jerrylee Rabano.
They had a civil marriage officiated by Makati mayor Abby Binay in 2019, followed by a church ceremony in 2022.