Nine as an Astro, five as a Ranger. Most of his single-season records happened when he was with the Angels, and his only World Series team was with the Mets, but he has pretty much been associated with the Rangers since he retired.
Before the retirement of the Big Unit, nobody in baseball besides Ryan pitching came close to resembling a pitcher who was able to produce well after age 40, and was arguably at their best (physically and psychologically) in their last third of their career.
Being out on the left coast, I think of him as an Angel first and foremost even though he did great things with other teams, like being on the amazing Mets. On the same home town type of thinking, or maybe listening to Bay Area news, I will always think of Billy Martin, Reggie Jackson, and Mark McGwire as Oakland A's legends though they also did amazing things with other teams. When Mark broke 61, we here out in the Bay Area went nuts. The bars were screaming like it was another 49ers Super Bowl victory and nobody here saw or cared that Mark had a Cardinals uniform on.
Many of us suspected steroids, of course, but it was still one of those moments you never forget. Until he beat the old Maris record, I stressed over all the things that could go wrong and believed 61 regular season home runs was a sports record seen in a way the speed of sound in flight was once thought of...impossible.
There are certainly numbers that could never be achieved in baseball, such as pitching a perfect game first time on the mound as a rookie, or hitting five home runs in a playoff game, or hitting 300 regular season hits in a single season, or hitting 100 home runs in a season. If anything close to that happens, I will eat my hat.