Established in 2004, the Everett Cup was the annual meeting between the Everett Aqua Sox, the Single-A affiliates of the Seattle Mariners, and the PIL’s Everett Merchants. The game allows the AquaSox to play an exhibition game prior to the start of the Northwest League and allows the Merchants to show their skills against the professionals.  The game has been played annually through the 2019 season.  With the AquaSox becoming a full season franchise the Everett Cup was suspended in 2021, with the AquaSox leading the All-Time series 12 to 3

In 2007, behind strong pitching of starter JT Zink and future major leaguer Mason Tobin the Merchants defeated the AquaSox 10-5, for their first victory in the series. Kyle Decater led the offensive attach going 3-5 with an RBI. With the score tied 4-4 in the eight inning, the Merchants took advantage of several AquaSox mistakes. In the inning, the AquaSox committed a pair of errors and their pitchers walked two hitters and hit three which helped the Merchants score six runs in the inning. Tobin was credited with the victory. Throughout the years, many of the games have been well balanced with numerous close games.

The 2010 game saw the Merchants dominate the AquaSox 10-5. After the AquaSox grabbed a 1-0 lead in the bottom of the first, it was all Merchants. The Merchants tied it in the second on Braden Degamo’s RBI single, took a 3-1 lead in the third on a pair of run-scoring wild pitches, then took control with three more in the fourth. With two on and two out Zach Miller lined a pinch-hit single to center, bringing in one run and two more runs scored two more on a throwing error by AquaSox catcher Carlton Tanabe to make it 6-1. Tyler Cox led the way offensively for the Merchants, coming off the bench to go 2-for-3 with a double and two RBI. Chris Seybold was credited with the victory. The Merchants would go onto the NBC World Series that year and the AquaSox would win the Northwest League championship.

Jared Maxfield started for the Merchants in the 2019 Everett Cup matchup against the AquaSox on June 12th, a game won by the Merchants 2-0. Maxfield pitched the first three innings for the Merchants, gave up two hits, struck out five and yielded no walks in the outing. In the game, the Merchants used six different pitchers (Maxfield, Jackson Webber, Charlie Wright, Gavin Bullock, Caden Cornett and Koby Blunt) who kept the AquaSox off balance with a bunch of off-speed pitches and limited the professionals to only three hits. The game was scoreless until the top of the sixth. Sam Lincsott led off the inning and later Austin Hauck also walked. With two outs Nic Anderson doubled down the left field line scoring both Linscott and Hauck for what would be the game winning hit off of Garrett Westberg. Max Whitt led the offensive attached going 2-4 while both Patrick Chung and Blunt each also having hits in the game. Charlie Wright pitched a perfect fifth inning and got the victory. Blunt closed the game out for the save.

2004 AquaSox 3, Merchants 0
2005:  AquaSox 15, Merchants 4
2006:  AquaSox 15, Merchants 3
2007: Merchants 10, AquaSox 5
2008: AquaSox 12, Merchants 2
2009:  AquaSox 8, Merchants 7
2010:  Merchants 10, AquaSox 5
2011:  AquaSox 10, Merchants 5
2012: AquaSox 5, Merchants 2
2013: AquaSox 5, Merchants 3
2014: AquaSox 3, Merchants 1
2015: AquaSox 7, Merchants 0
2016: AquaSox 6, Merchants 5
2017: AquaSox 7, Merchants 3
2018: Rained Out
2019: Merchants 2, AquaSox 0
2020:  Cancelled – COVID 19