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MLB Betting Lines: BoSox vs Mariners

The Seattle Mariners will send their ace to the mound on Friday as they begin a series against the Boston Red Sox at Fenway Park.

Felix Hernandez (8-8, 3.26 ERA) has fanned 146 batters in 151 2-3 innings for the Mariners so far this season, but he'll be looking to pick up his first win since June 24 on Friday night.

View Seattle vs Boston Odds and Stats.

Betting Line:
Baseball odds makers opened the Red Sox as -135 moneyline favorites in this matchup. Over under bettors saw the number open at 8.5.

Power Rankings:
This game matches up the No. 2 (Red Sox) and the No. 11 (Mariners) teams in their respective leagues, according to our current MLB Power Rankings.

How They Match Up:
The game also pits Boston's No. 1-rated American League offense, averaging 5.4 runs per game, against a Mariners defense that ranks No. 1 in the American League at 3.7 in runs allowed per game. The Red Sox have averaged 9.7 hits per game so far, more than Mariners batters have averaged on the year (7.4 hits per game).

Pitching and defensive stats are important baseball handicapping factors and Boston has the American League's No. 7-ranked defense. In the other dugout, the Mariners own the American League's No. 1 mark in runs allowed.

In their last action, Seattle was a 7-5 loser on the road against the Blue Jays. Bettors on Toronto at -168 on the moneyline collected their winnings from that game, while the total score (12) sent OVER bettors home happy as well. Seattle looks to rebound from a loss to the Blue Jays, who beat them 7-5 on Thursday behind a start from Ricky Romero at Rogers Centre.

The Red Sox were a 4-0 winner in their most recent outing on the road against the Orioles. That made winners of bettors who got Boston at -125 on the moneyline, while the total score (4) was good news for UNDER bettors. Andrew Miller chucked 5 2/3 shutout innings at the Orioles in their last game, striking out 3 in a 4-0 win against Baltimore in baseball action at Camden Yards.

Seattle Mariners Trends:
When playing on Friday are 5-5
Before playing Boston are 4-6
After playing Toronto are 4-6
After a loss are 0-10

Boston Red Sox Trends:
When playing on Friday are 6-4
Before playing Seattle are 7-3
After playing Baltimore are 6-4
After a win are 7-3

A few Mariners at Red Sox trends to consider:
The total has gone OVER in 4 of Seattle's last 5 games on the road
The total has gone UNDER in 4 of Seattle's last 5 games when playing on the road against Boston
The total has gone UNDER in 6 of Seattle's last 8 games when playing Boston
The total has gone UNDER in 17 of Seattle's last 25 games
Boston is 5-0 SU in its last 5 games at home
Boston is 10-2 SU in its last 12 games
The total has gone UNDER in 4 of Boston's last 5 games when playing at home against Seattle
The total has gone UNDER in 6 of Boston's last 8 games when playing Seattle

Next up:
Seattle at Boston, Saturday, July 23