Table: draft_picks_1970
Columns: round
pick
player
position
team

Question: What is the lowest pick of the defensive tackle player dave haverdick?
SQL: SELECT MIN("pick") FROM draft_picks_1970 WHERE "position" = 'defensive tackle' AND "player" = 'dave haverdick'

Question: What is the average pick of player jim h. mitchell?
SQL: SELECT AVG("pick") FROM draft_picks_1970 WHERE "player" = 'jim h. mitchell'