| Pbayear: | 1990 |
| Team: | Shell Rimula X |
| Coach: | Bobby Parks Arlene Rodriguez |
| 1C-Name: | First Conference |
| 1C-Wins: | 18 |
| 1C-Losses: | 6 |
| 1C-Place: | 1st |
| 1C-Playoffs: | Finals |
| 2C-Name: | All-Filipino Conference |
| 2C-Wins: | 3 |
| 2C-Losses: | 7 |
| 2C-Place: | 6th |
| 2C-Playoffs: | Eliminated |
| No-3C: | 1 |
| 3C-Name: | Third Conference |
| 3C-Wins: | 14 |
| 3C-Losses: | 8 |
| 3C-Place: | 3rd |
| 3C-Playoffs: | Semifinals |
| Owners: | Pilipinas Shell, Inc. |
| Pol Team: | 6 |
| Prevseason: | 1989 |
| Nextseason: | 1991 |
The 1990 Formula Shell Zoom Masters season was the 6th season of the franchise in the Philippine Basketball Association (PBA). Formerly known as Formula Shell Zoom Masters in the First and All-Filipino Conference.
| Round | Pick | Player | Details |
|---|---|---|---|
| 1 | 5 | Richard Bognot | Signed |
| 2 | 13 | Aristotle Franco | Signed |
| 3 | 20 | Aurelio Gamit | Unsigned, free agent |
February 20: Three-time best import Bobby Parks won his first game as playing-coach of the team with Shell having an easy 126-105 victory over Presto Tivoli.[1]
April 22: The Zoom Masters clinch the first finals seat of the Open Conference with their 13th win in 16 games, beating Presto Tivoli, 114-111.
October 28: Shell rolled to its seventh straight victory after an opening day blowout loss to Purefoods at the start of the Third Conference by routing Añejo Rum 65ers, 156-131.
November 18: Shell posted a 121-119 overtime victory over Alaska Milkmen for their third straight victory in the semifinals as they moved on top of the standings with 10 wins and three losses while Alaska dropped to second place at 10 wins and four defeats.[2]
December 4: Shell eliminates Presto, 137-114, to set up a do-or-die game with Purefoods Hotdogs for the right to meet Alaska Milk in the Third Conference championship.
Formula Shell emerge with the best won-loss record in the first conference with 14 wins and four losses and will go up against the league's most popular team Añejo Rum 65 in the finals. The explosive and riotous championship series ended in a walkout by the 65ers in the second quarter of Game Six with Shell on top, 62-47, with 2:52 remaining. The Zoom Masters won their first-ever PBA title since joining the league in 1985 with a 4-2 series win.
See main article: 1990 PBA First Conference finals.
Assistant coach Arlene Rodriguez has taken over the coaching job from Bobby Parks during the First Conference finals following the protest by the Basketball coaches of the Philippines (BCOP) against hiring American coaches.
| Player | Signed | Former team | |
| Joselito Martin | Off-season | N/A | |
| Primitivo Mutia | Off-season | N/A |
| "width:140px" | Player | Signed | New team | |
| 11 | July 1990 | Presto Tivolis |
| Name | Conference | No. | Pos. | Ht. | College | Duration | |
|---|---|---|---|---|---|---|---|
| Bobby Parks | First Conference Third Conference | 22 | Forward | 6"3' | Memphis State | February 20-May 15 September 30-December 13 | |
| Kevin Williams | Third Conference | 7 | Guard | 6"2' | Saint John's | September 30 to December 13 |