Luis Castillo will get the ball as the Seattle Mariners head to the North Star State to take on the Minnesota Twins, and our Mariners vs. Twins predictions explain why we expect Castillo to play a MAJOR role in the Mariners achieving victory. This is a game that features a compelling contrast between an established veteran starter and a rookie making just his fourth major league appearance, and the matchup favors Seattle in a BIG way. The Seattle Mariners have reeled off four straight wins heading into tonight's contest, and Castillo has found his form lately. The right-hander has allowed just three earned runs in his last two starts, and he has only allowed four earned runs on the road this year. His familiarity with the Minnesota Twins lineup is a SIGNIFICANT advantage — Castillo has held their hitters to a .195 average in 113 career at-bats, a number that reflects his ability to navigate their lineup with PRECISION and confidence. Seattle faces rookie Connor Prielipp tonight, who has held his own in three appearances. In his first start last week, Prielipp allowed just two earned runs against the New York Mets, showing the kind of poise and composure that suggests he could be a quality major league pitcher. But he is still a rookie, and the Mariners' lineup, which has scored 14 runs in their last two games, represents a STEP UP in competition from what he has faced so far. Our Mariners vs. Twins prediction: Mariners Moneyline at -135. We could see both guys throwing the ball well, but Castillo will be better, and Seattle will muster enough offense to chase Prielipp relatively early. The Mariners' offense has been PRODUCTIVE during their winning streak, and they have the kind of depth that can grind down even the most effective pitchers. Our Mariners vs. Twins Over/Under selection: Under 8.5 at +100. While Seattle's offense broke out a bit over the weekend, neither of these teams are scoring many runs overall. The Mariners are 22nd in runs scored and collected the Under in two of the three games against the Cardinals. The Twins also participated in a low-scoring affair in their last game, and with two pitchers who are capable of keeping runs off the board, the Under is the play. The Mariners are playing with CONFIDENCE and momentum, and Castillo gives them a significant edge on the mound. The Twins are still searching for consistency, and a rookie starter making his fourth appearance is not the ideal candidate to slow down a hot Seattle lineup. Look for the Mariners to extend their winning streak to five games with a victory at Target Field. For bettors looking for value, the Mariners on the moneyline at -135 is a SOLID play, and the Under at +100 offers good value given the pitching matchup and the offensive profiles of both teams. This is a game where the starting pitching should dominate, and the team with the better starter — the Mariners — should come out on top.