Shane Reynolds played eleven years for Houston and was a solid starting pitcher for most of it.  Known for his control, Reynolds would lead the National League in BB/9 (1.4) in 1999 and would also win the SO/BB (5.32) title.  The following season, Reynolds would make his first and only All-Star Game appearance.  The hurler had a 103-86 record with 1,309 Strikeouts.

Bob Watson achieved greater heights as an executive with the New York Yankees, but he was still quite the player who played at his peak with the Houston Astros. 

A two-time All-Star, Watson would exceed 150 hits six years in a row and had four campaigns where he batted over .300.  Watson's defensive skills were not the best, which hurts him on this list, but in the 14 years he played in Houston, he would collect 1,448 Hits, with 139 Home Runs with a .297 Batting Average. The Astros inducted Watson into their Hall of Fame in 2020.

Joe Niekro arrived in Houston as a veteran seeking a second act, a pitcher who had spent nearly a decade wandering through the league before finding the perfect environment for his specialized knuckleball. While he began his journey in the shadow of his Hall of Fame brother, Phil, it was in the climate-controlled air of the Astrodome where Joe truly mastered the butterfly-like motion of his signature pitch. For eleven seasons, he served as the durable anchor of the Houston rotation, proving that a player could reach a career-defining breakout well into his thirties.

Niekro’s rise in Houston began as a low-risk acquisition in 1975, but he reached a new gear of consistency once he fully committed to the knuckleball as his primary weapon. He moved from a swing-man role into a front-line starter, signaling a transition from a journeyman to a premier National League outlier. He possessed a focused intensity that allowed him to thrive in the pitcher-friendly confines of the Dome, where the lack of wind gave his specialized pitch an even more unpredictable break. By the late seventies, he had established himself as a high-frequency winner, a style that culminated in a historic two-year run of dominance.

The heart of his time in Houston came during the 1979 and 1980 campaigns. In 1979, Niekro authored a career year, winning 21 games and earning his first All-Star selection while finishing second in the Cy Young voting. He followed that performance with another 20-win season in 1980, finishing fourth in the Cy Young race and providing the veteran-like poise that helped guide the Astros to their first-ever division title. He showed the organization that a pitcher could lead a staff through guile and movement rather than raw velocity, eventually recording 144 wins in a Houston uniform.

Everything culminated in a decade-long run of reliability that saw him surpass 1,100 strikeouts and become the franchise's all-time leader in wins before his departure. However, the natural evolution of the roster led to a change in direction during the 1985 season, when he was traded to the New York Yankees to join his brother.

In 2019, the Astros inducted him into their inaugural Hall of Fame class.

J.R. Richard was a force of nature on the mound, a 6' 8" titan who possessed a velocity that felt like a localized atmospheric event. In an era where the radar gun was just becoming a standard part of the game’s lexicon, Richard was the gold standard for raw, unadulterated power. For a decade in Houston, he wasn't just a starter; he was a phenomenon who terrified hitters with a 100-mph heater and a slider that moved like a ghost.

Richard’s arrival in Houston in the early 1970s was a slow-burning evolution, as he worked to harness a lightning-bolt arm that often lacked direction. He reached a pivotal breakthrough in 1976, his first 20-win season, where he finally combined his massive frame with a repeatable delivery. That summer, he struck out 225 batters and threw 291 innings, signaling a transition from a wild prospect to the most feared arm in the National League. He possessed a focused intensity that allowed him to thrive in the high-pressure environment of the Astrodome, where his speed seemed even more lethal against the backdrop of the "Eighth Wonder of the World."

The middle of his tenure saw him reach an unrivaled gear of dominance. In 1978 and 1979, Richard became the first right-hander in National League history to record back-to-back 300-strikeout seasons. He led the league in punchouts both years, and in 1979, he reached a career-high mark for efficiency, leading the NL in both ERA (2.71) and FIP (2.21). He was a model of physical resilience, routinely pitching deep into games and finishing in the top five of the Cy Young voting. He showed the organization that a pitcher could become a franchise pillar by simply being too fast for the modern hitter to comprehend.

Everything seemed to be building toward a historic 1980 campaign. Richard started the All-Star Game and looked poised to lead the Astros to their first-ever postseason berth, carrying a 10-4 record and a microscopic 1.90 ERA into late July. However, the trajectory of his career reached a tragic and sudden final punctuation when he suffered a stroke during a warm-up session at the Astrodome. The medical emergency effectively ended his time on the mound at just 30 years old, leaving the baseball world to wonder what a full career of his "flamethrowing" ability might have looked like.

He left the game with 107 wins and 1,493 strikeouts, a statistical footprint that felt incomplete yet remained legendary. The story in Houston reached its rightful conclusion in 2019 when the Astros inducted him into the inaugural class of their Hall of Fame.