| Player History |
| 05-18-1971 | Drafted in 1st round, 9th overall pick, by Washington in 1971. |
| 07-22-1971 | Injured on 7/22/1971 with a Tight Elbow, out for 1-2 weeks. |
| 04-21-1972 | Injured on 4/21/1972 with a Torn Bicep Muscle, out for 5 weeks. |
| 05-02-1973 | Earned first career win on 5/2/1973. |
| 08-01-1973 | Won Pitcher of the Month award on 8/1/1973, going 4-0, 0.89. |
| 03-09-1975 | Injured on 3/9/1975 with a Tender Elbow, out for one week. |
| 07-01-1975 | Was selected to the 1975 Allstar game... |
| 01-29-1976 | Gets a new one-year contract worth $4,642,857 through salary arbitration. |
| 01-29-1977 | Gets a new one-year contract worth $5,621,429 through salary arbitration. |
| 05-05-1977 | Injured on 5/5/1977 with a Spasms Back, out for 4 weeks. |
| 01-26-1978 | Gets a new one-year contract worth $5,921,429 through salary arbitration. |
| 06-01-1978 | Wins the MLB AL Pitcher of the Month Award. |
| 06-04-1978 | Signed a 4-year contract extension worth a total of $41,200,000 with the Washington Senators organization. |
| 06-29-1978 | Was selected to the 1978 Major League Baseball All-Star Game. |
| 01-01-1979 | SISA scouting updated ratings (potential): Stuff: 6 (6); Movement: 8 (8); Control: 9 (9). |
| 07-02-1979 | Pitches a 3-hit shutout against the Cleveland Indians with 8 strikeouts and 1 BB allowed! |
| 01-01-1980 | SISA scouting updated ratings (potential): Stuff: 6 (6); Movement: 9 (9); Control: 7 (8). |
| 09-01-1980 | Wins the MLB AL Pitcher of the Month Award. |
| 01-01-1981 | SISA scouting updated ratings (potential): Stuff: 6 (7); Movement: 8 (8); Control: 9 (9). |
| 08-22-1981 | Pitches a 6-hit shutout against the New York Yankees with 9 strikeouts and 0 BB allowed! |
| 01-01-1982 | SISA scouting updated ratings (potential): Stuff: 7 (7); Movement: 9 (9); Control: 8 (8). |
| 05-19-1982 | Signed a 3-year contract extension worth a total of $46,280,000 with the Washington Senators organization. |
| 05-26-1982 | Pitches a 5-hit shutout against the Boston Red Sox with 5 strikeouts and 2 BB allowed! |
| 07-17-1982 | Pitches a 5-hit shutout against the Boston Red Sox with 6 strikeouts and 3 BB allowed! |
| 01-01-1983 | SISA scouting updated ratings (potential): Stuff: 6 (6); Movement: 8 (8); Control: 8 (8). |
| 06-29-1983 | Was selected to the 1983 Major League Baseball All-Star Game. |
| 08-11-1983 | Pitches a 4-hit shutout against the Minnesota Twins with 6 strikeouts and 1 BB allowed! |
| 01-01-1984 | SISA scouting updated ratings (potential): Stuff: 7 (7); Movement: 9 (9); Control: 8 (8). |
| 05-01-1984 | Wins the MLB AL Pitcher of the Month Award. |
| 06-29-1984 | Was selected to the 1984 Major League Baseball All-Star Game. |
| 09-01-1984 | Wins the MLB AL Pitcher of the Month Award. |
| 01-01-1985 | SISA scouting updated ratings (potential): Stuff: 6 (7); Movement: 9 (9); Control: 8 (8). |
| 04-30-1985 | Pitches a 4-hit shutout against the Milwaukee Brewers with 8 strikeouts and 2 BB allowed! |
| 05-14-1985 | Earns his 200th career Major League Baseball victory! |
| 06-29-1985 | Was selected to the 1985 Major League Baseball All-Star Game. |
| 07-27-1985 | Pitches a 3-hit shutout against the Milwaukee Brewers with 7 strikeouts and 3 BB allowed! |
| 11-18-1985 | Became a free agent. |
| 01-01-1986 | SISA scouting updated ratings (potential): Stuff: 6 (6); Movement: 8 (9); Control: 8 (8). |
| 05-16-1986 | Pitches a 3-hit shutout against the Chicago (A) White Sox with 6 strikeouts and 2 BB allowed! |
| 06-01-1986 | Wins the MLB AL Pitcher of the Month Award. |
| 06-29-1986 | Was selected to the 1986 Major League Baseball All-Star Game. |
| 07-12-1986 | Collects his 3000th career Major League Baseball strikeout! |
| 08-22-1986 | Pitches a 5-hit shutout against the New York Yankees with 6 strikeouts and 0 BB allowed! |
| 01-01-1987 | SISA scouting updated ratings (potential): Stuff: 5 (6); Movement: 9 (9); Control: 8 (9). |
| 05-15-1987 | Injured (back spasms), out for 2 weeks. |
| 10-13-1987 | Pitches a 3-hit shutout against the California Angels with 2 strikeouts and 0 BB allowed! |
| 01-01-1988 | OSA scouting updated ratings (potential): Stuff: 4 (6); Movement: 7 (8); Control: 8 (8). |
| 05-29-1988 | Earns his 250th career Major League Baseball victory! |