Table:
text: Bobby Riggs
Pro Slam
Pro Slam
Outcome Year_ Pro_Slam_Championship Surface Opponent_in_the_final Score_in_the_final
Runner-up 1942 US Pro Grass Don Budge 2–6, 2–6, 2–6
Winner 1946 US Pro Grass Don Budge 6–3, 6–1, 6–1
Winner 1947 US Pro Grass Don Budge 3–6, 6–3, 10–8, 4–6, 6–3
Runner-up 1948 US Pro Grass Jack Kramer 12–14, 2–6, 6–3, 3–6
Runner-up 1949 Wembley Pro Indoor Jack Kramer 6–2, 4–6, 3–6, 4–6
Winner 1949 US Pro Grass Don Budge 9–7, 3–6, 6–3, 7–5

Question: What is the opponent in the finals if the year is "1942", Bobby Riggs Pro Slam?

Question: What is the average year that Outcome is "winner" among Bobby Riggs' Pro Slam matches?