Our next entry in the MLB Radial Axis Series features the Astros, who started out as the Colt .45s in 1962. We’re going to walk through some highlights from the network, and then provide the link so you can explore it in detail. For some background on how the network graphs work, select this link – Anatomy of MLB radial axis graphs.
The Astros Network
The Astros’ radial axis network reflects the connections between all players who spent time with the franchise between the 1962 and 2025 seasons. The 1962 season is found at the bottom center of the graph. Subsequent seasons are arranged clockwise, eventually returning to the bottom center with the 2025 season. Player nodes are sized based on the number of seasons spent with the team, and the gray lines between nodes reflect connections to other players. The interactive version of the network is here – Astros Network.
Top 10 by Seasons Played (Size)
Craig Biggio sits alone at the top of the Astros seasons played list with 20, trailed by Jose Altuve (now in season 16) and Jeff Bagwell. Other long-tenured Angels legends include Terry Puhl, Bob Watson, Jose Cruz, Larry Dierker, and Denny Walling.
Top 10 by Degree (the number of connections)
Craig Biggio again tops the degrees ranking, having been on an Astros roster with 338 different teammates. Jose Altuve is likely to claim the top spot eventually, while Jeff Bagwell is a distant third. Jason Castro had two stints (2010-16, 2021-22) with Houston, leading to a large number of different teammates.
Top 10 by Harmonic Closeness Centrality
With Harmonic Closeness Centrality, we’re measuring how strongly an individual player is related to all players in the network. The Astros famed Killer B’s dominate this measure. Biggio, Bagwell, and Berkman all rank at the top of the most well-connected players in Astros history. Jose Altuve and Wandy Rodriguez are also very favorably positioned within the network.
Top 10 by Betweenness Centrality
Betweenness Centrality measures which players are most central to the network. Often, this results in players who played in the middle period of a franchise’s history, or players with multiple stints with one franchise. Craig Biggio is unsurprisingly at the top of this measure, given his 20 seasons with the team. If we wanted to connect to every Astro in the network, our best path is through Biggio, followed by Greg Gross. Gross played just five seasons with the Astros, four to start his career and then one for his final MLB season. This makes him occupy a unique position within the Astros network, connecting to teammates from 1973-76 and again in 1989.
Summary
That’s it for our overview of the Astros network. Be sure to visit the interactive graph to discover additional insights about the Astros players over the last 64 seasons. We’ll be back shortly with our next franchise entry. Thanks for reading!