The Mariners plan to deploy Solano mostly at first base, Daniel Kramer of MLB.com reports.
The Mariners signed Solano to a one-year contract Monday, Ryan Divish of The Seattle Times reports.
Solano isn't in the Padres' lineup Wednesday for Game 4 of the NLDS against the Dodgers.
Solano is absent from the lineup Tuesday in Game 3 of the NLDS against the Dodgers.
Solano is not in the lineup Sunday for Game 2 of the NLDS against the Dodgers.
Solano is not in the starting lineup for Sunday's game against the Diamondbacks.
Solano is not in Thursday's starting lineup against the Dodgers.
Solano went 4-for-5 with three doubles and a run in Saturday's 8-0 win against the Giants.
Solano went 4-for-5 with four RBI in Tuesday's 6-0 win over the Pirates.
Solano will serve as the Padres' designated hitter and No. 2 batter in Sunday's game against Atlanta.