He is also the team manager for NorthPort Batang Pier of the Philippine Basketball Association (PBA) and was their head coach on two stints.

Jarencio played college basketball for the UST Glowing Goldies during the 1980s under coaches Charlie Badion and Aric del Rosario.

He was a walk-in applicant for the Glowing Goldies after unsuccessfully trying out for Turo Valenzona's Trinity College team in the NCAA.

[5] Jarencio played in the Philippine Amateur Basketball League from 1984 to 1986 and was part of the San Miguel franchise team, Magnolia Ice Cream.

[7] The team changed their name back to Magnolia Ice Cream and they exacted revenge on ESQ by beating them in the finals of the 1986 Founder's Cup.

[10] Jarencio turned professional in 1986, joining the Magnolia Cheese Makers who had taken leave from the PBA when the events related to the EDSA revolution unfolded.

After being traded to Great Taste from San Miguel Beer in 1988, he was given longer playing minutes as backup to starting point guard Bernie Fabiosa.

[14] Ironically, he was traded to Purefoods the following year and was again relegated to a reliever role, playing behind point guards Al Solis and Dindo Pumaren.

He won his third championship in the PBA in the 1997 Commissioner's Cup with Ginebra, which had used the name Gordon's Gin Boars at the start of the season.

[19] Jarencio had amassed 6,121 career points after his last active year in 2001, ranking him 49th in the PBA All Time Scoring Leaders list.

[20] aCareer high Source: PBA Records & Oddities Jarencio was appointed head coach of the UST Growling Tigers on February 21, 2006.

In 2003, Jarencio had gone to UST to accompany his daughter in her enrollment and bumped into Institute of Physical Education and Athletics (IPEA) director Fr.

Gina Francisco, the UST senior women's basketball team captain when Jarencio was still playing for the Glowing Goldies, persisted in convincing him to apply for the head coach position.

He passed the interviews and was later given a one-year contract with an understanding for him to rebuild the Growling Tigers' basketball program for the next three years.

Out of anger, Jarencio, charged towards the Red Bull bench and almost came into contact with Guiao, which happened in front of the referees.

Jarencio was called for one technical foul and was later meted a P50,000 fine for improper contact with an official and also a one-game suspension.

[28] In 2013, it was reported that Jarencio will take over as coach of the Barako Bull Energy Boosters, but contract negotiations fell through.

[30] In January 2023, NorthPort named Jarencio as their team manager, replacing Bonnie Tan, who then became their interim head coach.

During the game, NLEX import Thomas Robinson was involved in several collisions and had exchanged words with Jarencio in the third quarter.

Meanwhile, Robinson's contract was terminated by NLEX citing "his taking an unplanned vacation and skipping team practices.