Chapman was activated from the paternity list and is part of the starting lineup for Saturday's game against the Royals, Maria I. Guardado of MLB.com reports.
The Giants officially placed Chapman (personal) on the paternity list Wednesday.
The Giants are placing Chapman on the paternity list Tuesday, Andrew Baggarly of The Athletic reports.
Chapman is absent from the lineup for Tuesday's game in Baltimore.
Chapman went 1-for-3 with a solo home run in Wednesday's 13-2 win over the Brewers.
Chapman went 2-for-4 with a two-run homer and a stolen base in Sunday's win over the Padres.
Chapman went 1-for-5 with a solo home run in Tuesday's loss to the Diamondbacks.
Chapman went 3-for-4 with a double, a home run and two RBI in Wednesday's 7-4 win over the Nationals.
Chapman went 2-for-5 with a two-run home run and an additional run scored in Sunday's win against the Reds.
Chapman went 3-for-4 with a walk, two RBI and a stolen base in Sunday's 5-4 win over the Rockies.