Reminder: Always double check the lineup card before rosters lock to make sure that a player you've chosen to roster is playing that day, and check the weather to make sure your players won't get rained out of their game.
The concept of stacking in Daily Fantasy Sports is to insert a large number of players from the same team into your lineup. This is done to increase the ceiling of production. If you roster, say, a team's 1-4 in the lineup, and the first two reach base, a home run would be worth 10+ points to your team: 4 for the HR, 1 for each of the 3 runs scored, 1 for each of the 3 RBIs, plus points for how the first two runners got on originally. It's a very common tactic to take in a large tournament format against tens of thousands of opposing fantasy owners, where you want to maximize the ceiling production of your team.
FanDuel allows a maximum of 4 batters per team to be played in your lineup, so here is the stack I think gives the best value/production combo, and why:
Mariners LHB stack vs. Miguel Gonzalez
Gonzalez owns an ugly 4.86 FIP vs LHB in 107 IP dating back to the start of 2014, and a few Mariners players really jumped out at me as very solid bargain plays for tomorrow. All of them make a lot of hard contact against RHP, and two of them haven't been rewarded for it with good outcomes, resulting in price drops that we can take advantage of.
2B- Robinson Cano, $3,000
In 113 ABs vs RHP this year, Cano only has a 101 wRC+, but he's ended roughly 24% of his at bats with a hard hit ball against right handers, which is significantly above the MLB average of 15%. Cano's average results vs RHP can be chalked up to bad luck and probably ballpark factors in the AL West. He moves to a much better park tomorrow in Camden Yards. Cano is my favorite bargain play for tomorrow at this price. He's still an elite hitter despite what his outcomes have been through 6 weeks and will be an excellent play in hitter friendly road ballparks, especially against below average right handed pitchers.
3B- Kyle Seager, $3,100
Seager and Cano have a lot in common through 6 weeks. Seager also hasn't had great outcomes vs RHP this year (98 wRC+), but he's ended 21.5% of his at bats against RHP with a hard hit ball, significantly above average. He hasn't been rewarded for his hard contact, and it's probably due to the combination of bad luck and park factors mentioned above. Camden Yards will fix some of that, and a pitcher with a 4.86 FIP in his last 100+ IP vs LHB is an excellent pitcher to help him generate better results.
SS- Brad Miller, $3,000
Miller is another Mariners lefty that is creaming the ball often, ending 22% of his at bats with a hard hit ball. Unlike Cano and Seager, Miller has had great results vs RHP (166 wRC+), so he'll probably be a more popular play tomorrow among the masses. At $3,000, he's the 10th priced SS, which is good value for a position that doesn't have a whole lot of productive options.
OF- Seth Smith, $2,200
Smith has ended 18.5% of his at bats vs RHP with a hard hit ball in 2015 and has a 130 wRC+ in 559 PA vs RHP dating back to the start of 2014. He usually bats leadoff against RHP, which gives him valuable extra PAs and run scoring chances. Smith is priced as a punt play but provides way more than that. He's one of the biggest bargains on FanDuel tomorrow if he hits leadoff.
Follow me on Twitter at @TimFinn521, I usually tweet out more good options as lineups are released.