Kyle Mckay kept the Lethbridge Bulls (7-11) off the board during his six innings of work and the Medicine Hat Mavericks (15-3) beat the Lethbridge Bulls, 4-0.
Mckay struck out five and allowed two walks and five hits.
The Medicine Hat Mavericks' Bryan Arthur was perfect at the dish, going 2-2. He doubled in the sixth inning and singled in the eighth inning.
Kyle Olason was charged with his second loss of the year. He lasted just four innings, walked three, struck out three, and allowed two runs.