Through 22 games the Mariners have averaged 3.62 runs per game at home and 5.67 runs per game on the road.
Seattle ranks fifth in the American League, 13th overall, in runs scored per game despite playing 13 of its first 22 games at T-Mobile Park:
https://www.teamrankings.com/mlb/stat/runs-per-game
The Mariners have posted an OPS+ of 115, third in the league, and an ERA+ of 99, 11th in the AL:
https://www.baseball-reference.com/leagues/AL/2025.shtml