| Player History |
| 11/15/1958 | Drafted in the 1958 first-year player draft (Round 1, Pick 1, 1st overall pick) by the Kansas City Athletics. |
| 11/18/1958 | Signed with the Kansas City Athletics organization for a signing bonus of $150,700 and a 3-year major league contract worth a total of $507,000. |
| 01/01/1959 | OSA scouting updated ratings (potential): Contact: 13 (13); Power: 16 (16); Eye: 13 (13). |
| 04/09/1959 | Named the #7 prospect in the HBC |
| 05/01/1959 | Wins the HBC AL Rookie of the Month Award. |
| 07/05/1959 | Was selected to the 1959 Hardball Chronicles All-Star Game. |
| 07/20/1959 | Wins the HBC AL Player of the Week Award. |
| 09/01/1959 | Wins the HBC AL Rookie of the Month Award. |
| 09/07/1959 | Wins the HBC AL Player of the Week Award. |
| 10/16/1959 | Wins the 1959 HBC AL Gold Glove at 1B. |
| 10/17/1959 | Wins the 1959 HBC AL Rookie of the Year. |
| 01/01/1960 | OSA scouting updated ratings (potential): Contact: 14 (14); Power: 18 (18); Eye: 13 (13). |
| 06/01/1960 | Wins the HBC AL Batter of the Month Award. |
| 06/06/1960 | Wins the HBC AL Player of the Week Award. |
| 07/01/1960 | Wins the HBC AL Batter of the Month Award. |
| 07/04/1960 | Wins the HBC AL Player of the Week Award. |
| 07/10/1960 | Was selected to the 1960 Hardball Chronicles All-Star Game. |
| 10/14/1960 | Won the 1960 Hardball Chronicles World Series with the Kansas City Athletics! |
| 10/29/1960 | Wins the 1960 HBC AL MVP. |
| 01/01/1961 | OSA scouting updated ratings (potential): Contact: 15 (15); Power: 18 (18); Eye: 14 (14). |
| 03/09/1961 | Signed a 3-year contract extension worth a total of $583,050 with the Kansas City Athletics organization. |
| 05/01/1961 | Wins the HBC AL Player of the Week Award. |
| 06/01/1961 | Wins the HBC AL Batter of the Month Award. |
| 07/09/1961 | Was selected to the 1961 Hardball Chronicles All-Star Game. |
| 07/10/1961 | Wins the HBC AL Player of the Week Award. |
| 08/07/1961 | Wins the HBC AL Player of the Week Award. |
| 08/14/1961 | Wins the HBC AL Player of the Week Award. |
| 09/01/1961 | Wins the HBC AL Batter of the Month Award. |
| 10/01/1961 | Wins the HBC AL Batter of the Month Award. |
| 10/02/1961 | Wins the Hardball Chronicles triple-crown!! |
| 11/02/1961 | Wins the 1961 HBC AL MVP. |
| 01/01/1962 | OSA scouting updated ratings (potential): Contact: 16 (16); Power: 18 (18); Eye: 16 (16). |
| 04/27/1962 | Hits three home runs against the New York Yankees, going 4-6 with 10 RBI and 3 runs scored! |
| 05/01/1962 | Wins the HBC AL Batter of the Month Award. |
| 05/05/1962 | Goes 0-4 against the Minnesota Twins, ending his hitting streak at 21 games. |
| 06/01/1962 | Wins the HBC AL Batter of the Month Award. |