By taking over first base coaching - San Francisco Giants
Alyssa Nakken on her Giants coaching debut
SF Giants coach Nakken is pregnant, expecting baby in February: husband
Alyssa Nakken makes MLB history as first woman to coach on field during game
Giants' Alyssa Nakken Becomes 1st MLB Female Coach on the Field – NBC Bay Area
Giants' Nakken becomes 1st woman to coach on-field in regular-season MLB game
Alyssa Nakken becomes the first woman to coach on the field in MLB history – WABE
SF Giants coach Alyssa Nakken makes history coaching first base
Giants' Alyssa Nakken, 1st female MLB coach, gets reps at first base
Alyssa Nakken - Wikipedia