[3] He was both awarded as the Most Valuable Player and Defensive Player of the Year for the NCAA Season 89[4] and led the Knights to the men's basketball championship match against the San Beda Red Lions for two straight seasons, by which they were beaten on both occasions.

[7] He played alongside the celebrated Extra Rice Inc. frontline of Beau Belga and JR Quiñahan and was a key role player off-the-bench.

On December 29, 2013, he played his first breakout game as a pro, finishing with 17 points, 11 rebounds, and two blocks in just 24 minutes in the Elasto Painters’ 101–77 victory over the San Mig Super Coffee Mixers.

[8] In his first conference, Rain or Shine beat the Globalport Batang Pier in the quarterfinals,[9] and the Petron Blaze Boosters in the semifinals.

[12] His team made the semis in the Commissioner's Cup, where they lost to the Talk N'Text Tropang Texters.

[20] After a game against the Barangay Ginebra San Miguel in the Commissioner's Cup, he was fined 40,000 pesos for “taunting, provoking, and scoffing at the fans with the use of a dirty finger and other offensive verbal physical gestures.”[21] His team clinched the first seed that conference.

[22] They beat Ginebra in the quarterfinals, with Almazan providing 17 points (12 in the fourth), 5 rebounds and the triple that tied the game 84-all.

[26] In the Governor's Cup, his team started 1–4, but finished the elimination round on a 6-game win streak, good for the 3rd seed.

[27] They made it all the way to the semis, where the San Miguel Beermen eliminated them in four games in a best-of-five format.

[29] They made it to the semis against the Beermen, where before Game 3, he stepped on Jewel Ponferada's foot, spraining his right ankle.

[42] Rain or Shine was swept by the Star Hotshots in the first round, failing to defend their Commissioner's Cup title.

[43] In the Governor's Cup, he hit clutch free throws along with his 15 points and 10 rebounds off the bench against Globalport to secure the win, 98–96.

[45] In his first game after his Gilas duties, he had 13 points, 14 rebounds, and 3 assists as Rain or Shine won against the Hotshots, 92–88.

[49][50] During the Philippine Cup, Almazan was benched against Phoenix for a subpar showing in their previous game against Globalport.

[68] He was just two points shy of a 20–20 outing as he produced 18 markers and a career-high 24 boards against the Columbian Dyip.

[83] In the 2021 Philippine Cup, he had a conference-high 17 rebounds to go with his 15 points as Meralco gave the Elite their 19th consecutive defeat.

[87][88] On March 23, 2024, Almazan won the PBA All-Star Big Man 3-point shooting at La Salle Coliseum.

With 7-year-old son Rayl Jacob, he received a P30,000 cash prize from Willie Marcial and chairman Ricky Vargas.

[89] As of the end of 2023–24 season[90] Almazan was first invited to the Philippines' national team for the 2016 FIBA Olympic Qualifying Tournament, but he was not released by Rain or Shine.

[97] In 2022, he was in the pool for the fourth window of the 2023 FIBA World Cup Asian Qualifiers, but had to beg off due to family issues regarding his son's health.