This is Tiger’s 14th appearance in the Memorial.
In his previous 13 appearances, he won 5 times.
In those 5 wins, his first round scores were 70, 69, 68, 71 and 68.
After the first round in his 5 previous wins, his position was 11th, 9th, 5th, 8th and 5th.
In 2013, his first round score was 71, and he was in 11th place.
More details here;
https://www.golfstats.com/search/?tournament=Memorial+Tournament&tour=&player=Tiger+Woods&submit=go