The Arizona Diamondbacks will travel to Peoria on Sunday for their third Cactus League matchup, this time against the Seattle Mariners as the "away" team. The first pitch will be at 1:10 p.m. Arizona time. Sunday's game will be broadcast on ESPN 620, and televised by the Mariners' broadcast team as a Free Game of the Day on MLB.TV.

The Cactus League season is officially underway for the Mariners, who opened their Spring Training slate of exhibitions on Friday afternoon with a 5-2 loss to the Padres. With that in mind, here are three things to watch in the early weeks now that games have begun.

The Arizona Diamondbacks and Colorado Rockies will open Cactus League play with a game at 1:10 p.m. MST on Friday at Salt River Fields. The game will be webcast on Dbacks.com. The D-backs will be the home team for this matchup in the facility the two teams share.

Add that to some shaky performances from the Mariners’ pitching pile and we have a 5-2 loss to the Padres to open the spring campaign. It was a rough start for lefty Jhonathan Díaz, who walked the first batter he saw and surrendered a two-run home run to Manny Machado,

In the fifth, speedy D-backs utilityman Garrett Hampson singled, advanced on a grounder and stole third. With one out, infielder Ildemaro Vargas delivered Arizona's first Cactus League home run over the right field wall, regaining a 6-5 Diamondbacks lead.