| Player History |
| 03/15/1962 | Drafted in the 1962 first-year player draft (Round 1, Pick 1, 1st overall Pick) by the Houston Colt .45's. |
| 04/06/1962 | Injured (partially torn labrum), out for 4 months. |
| 04/09/1962 | Named the #4 prospect in the MLB |
| 01/01/1963 | OSA scouting updated ratings (potential): Stuff: 6 (6); Movement: 5 (7); Control: 6 (8). |
| 04/08/1963 | Named the #6 prospect in the MLB |
| 04/30/1963 | Pitches a 4-hit shutout against the Zephyrhills Kingfishers with 6 strikeouts and 1 BB allowed! |
| 05/18/1963 | Pitches a 5-hit shutout against the Buckhannon Deputies with 6 strikeouts and 2 BB allowed! |
| 06/01/1963 | Wins the MLBAAA SL2 Pitcher of the Month Award. |
| 06/12/1963 | Was selected to the 1963 MLB Triple A All-Star Game. |
| 07/12/1963 | Pitches a 2-hit shutout against the Prospect Aces with 6 strikeouts and 2 BB allowed! |
| 07/16/1963 | Injured (back tightness), day-to-day for 2 weeks. |
| 07/26/1963 | Suffered setback in recovery from injury, will miss another 6 days. |
| 09/24/1963 | Wins the 1963 MLBAAA SL2 Outstanding Pitcher Award. |
| 01/01/1964 | OSA scouting updated ratings (potential): Stuff: 6 (6); Movement: 6 (7); Control: 7 (8). |
| 04/13/1964 | Named the #4 prospect in the MLB |
| 04/20/1964 | Injured (hamstring soreness), out for one week. |
| 09/03/1964 | Injured (wrist soreness), day-to-day for 3 days. |
| 11/09/1964 | Received a 1-year contract worth a total of $23,390 through automatic renewal. |
| 01/01/1965 | OSA scouting updated ratings (potential): Stuff: 7 (7); Movement: 7 (7); Control: 7 (8). |
| 04/12/1965 | Pitches a 2-hit shutout against the Philadelphia Phillies with 10 strikeouts and 1 BB allowed! |
| 07/05/1965 | Was selected to the 1965 Major League Baseball All-Star Game. |
| 08/01/1965 | Pitches a 4-hit shutout against the Cincinnati Reds with 6 strikeouts and 1 BB allowed! |
| 08/21/1965 | Pitches a 5-hit shutout against the Chicago Cubs with 7 strikeouts and 0 BB allowed! |
| 09/01/1965 | Wins the MLB NL Pitcher of the Month Award. |
| 11/04/1965 | Received a 1-year contract worth a total of $24,774 through automatic renewal. |
| 01/01/1966 | OSA scouting updated ratings (potential): Stuff: 7 (7); Movement: 7 (7); Control: 7 (8). |
| 11/04/1966 | Received a 1-year contract worth a total of $212,220 through arbitration. |
| 01/01/1967 | OSA scouting updated ratings (potential): Stuff: 7 (7); Movement: 7 (7); Control: 8 (8). |
| 04/21/1967 | Injured (tired arm), out for one week. |
| 10/01/1967 | Wins the MLB NL Pitcher of the Month Award. |
| 10/30/1967 | Received a 1-year contract worth a total of $241,908 through arbitration. |
| 01/01/1968 | OSA scouting updated ratings (potential): Stuff: 7 (7); Movement: 7 (7); Control: 8 (8). |
| 07/01/1968 | Wins the MLB NL Pitcher of the Month Award. |
| 08/06/1968 | Pitches a 3-hit shutout against the New York Mets with 6 strikeouts and 0 BB allowed! |
| 10/28/1968 | Received a 1-year contract worth a total of $304,920 through arbitration. |
| 01/01/1969 | OSA scouting updated ratings (potential): Stuff: 7 (7); Movement: 6 (6); Control: 8 (8). |
| 03/25/1969 | Signed a 3-year contract extension worth a total of $1,407,000 with the Houston Astros organization. |
| 05/25/1969 | Pitches a 4-hit shutout against the New York Mets with 7 strikeouts and 2 BB allowed! |
| 07/01/1969 | Wins the MLB NL Pitcher of the Month Award. |
| 07/12/1969 | Was selected to the 1969 Major League Baseball All-Star Game. |
| 08/18/1969 | Pitches a 3-hit shutout against the San Francisco Giants with 6 strikeouts and 0 BB allowed! |
| 09/01/1969 | Wins the MLB NL Pitcher of the Month Award. |
| 09/21/1969 | Pitches a 4-hit shutout against the St. Louis Cardinals with 9 strikeouts and 1 BB allowed! |
| 01/01/1970 | OSA scouting updated ratings (potential): Stuff: 7 (7); Movement: 6 (6); Control: 8 (8). |
| 06/24/1970 | Pitches a 2-hit shutout against the St. Louis Cardinals with 8 strikeouts and 0 BB allowed! |
| 10/01/1970 | Wins the MLB NL Pitcher of the Month Award. |
| 10/22/1970 | Won the 1970 Major League Baseball World Series with the Houston Astros! |
| 01/01/1971 | OSA scouting updated ratings (potential): Stuff: 7 (7); Movement: 6 (6); Control: 8 (8). |
| 05/30/1971 | Pitches a 2-hit shutout against the Cincinnati Reds with 9 strikeouts and 0 BB allowed! |
| 11/16/1971 | Signed a 7-year contract extension worth a total of $5,759,800 with the Houston Astros organization. |
| 01/01/1972 | OSA scouting updated ratings (potential): Stuff: 7 (7); Movement: 6 (6); Control: 8 (8). |
| 07/26/1972 | Pitches a 4-hit shutout against the Montreal Expos with 7 strikeouts and 1 BB allowed! |
| 09/17/1972 | Pitches a 4-hit shutout against the St. Louis Cardinals with 8 strikeouts and 2 BB allowed! |
| 01/01/1973 | OSA scouting updated ratings (potential): Stuff: 7 (7); Movement: 6 (6); Control: 8 (8). |
| 07/09/1973 | Was selected to the 1973 Major League Baseball All-Star Game. |
| 07/22/1973 | Pitches a 5-hit shutout against the New York Mets with 10 strikeouts and 2 BB allowed! |
| 09/15/1973 | Collects his 2500th career Major League Baseball strikeout! |
| 01/01/1974 | OSA scouting updated ratings (potential): Stuff: 7 (7); Movement: 6 (6); Control: 8 (8). |
| 05/19/1974 | Pitches a 6-hit shutout against the Cincinnati Reds with 6 strikeouts and 3 BB allowed! |
| 06/07/1974 | Pitches a 6-hit shutout against the New York Mets with 5 strikeouts and 2 BB allowed! |
| 08/05/1974 | Pitches a 2-hit shutout against the San Francisco Giants with 6 strikeouts and 2 BB allowed! |
| 10/02/1974 | Pitches a 6-hit shutout against the Los Angeles Dodgers with 4 strikeouts and 1 BB allowed! |
| 01/01/1975 | OSA scouting updated ratings (potential): Stuff: 7 (7); Movement: 6 (6); Control: 8 (8). |