Sainz’s capture was a major coup ahead of last year, after he was left without a seat following Lewis Hamilton’s switch to Ferrari.
Clark called last year’s incident at Oakmont the “lowest point” of his career.
Gregor Townsend’s side have now won four of their six Tests this calendar year.
The fast bowler has gone from considering his future due to injuries to establishing himself as a key man for England.
Former champion hurdler would have needed another run to qualify.