DENVER -- Rockies infielder Ryan McMahon’s walkup song is “Welcome Back,” a 2004 tune from the rapper Mase.

Don’t tune out, fans who are old school enough to remember when there were just three broadcast networks. Mase's song samples the theme from the 1970s ABC show that made John Travolta famous, “Welcome Back, Kotter.”

At any rate, McMahon and the Rockies were back at the only place they feel welcome (Coors Field) on Friday night. And McMahon made that home happy by hitting two home runs in a 7-1 win over the D-backs.

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“It was good for us to get back here and get this win,” McMahon said. “The past is the past. All we can do is look to the future and keep playing good baseball like we did tonight.”

Earlier this week, the Rockies went to San Diego and scored one run in 28 innings while getting swept in three games by the Padres and falling to 2-17 on the road. But no need to kick anyone while they’re up -- not the Rockies, who improved to 14-12 at home. And certainly not McMahon, who has launched eight of his team-high 11 homers at 20th & Blake.

Five of McMahon’s homers have come in two games against the D-backs. But there was a huge difference between Friday and April 6, when he swatted three home runs. The Rockies lost that one in 13 innings, 10-8.

This time, McMahon had help. Raimel Tapia hit a two-run homer in the second and starter Germán Márquez struck out eight over seven scoreless innings of four-hit ball.

McMahon's big night came after he went 0-for-11 in San Diego. But most of the Rockies' lineup struggled there. It was such a tough trip that manager Bud Black said the team met Friday and discussed some different ideas for the next road trip.

At 26, and with a contract under club control through 2023, McMahon has plenty of time to address the home-road difference -- he's currently batting .289 at home and .216 in away games. Actually, McMahon spent time before the game addressing an issue that could impact the success of his swing anywhere.

Shortstop Trevor Story was first on the field before the game, taking soft toss and breaking down his swing with hitting coach Dave Magadan. But McMahon arrived shortly after, twisting and jab-stepping to figure out where his swing was going wrong. Manager Bud Black said McMahon was pulling off pitches, which makes his swing too pull-oriented. But McMahon said that’s a symptom of an adjustment that works, until it doesn’t.

If McMahon doesn’t feel powerful when he lifts his leg at the start of his left-handed swing, he instinctively spreads his feet to achieve the right sensation. However, his feet then spread too wide, and it leads to mechanics that pull him off the proper swing path.

Corrected in the afternoon, McMahon’s swing produced an opposite-field two-run homer to left off D-backs starter Seth Frankoff in the first inning and a 457-foot solo shot to center off Riley Smith in the fifth.

The process, more than the homers, led to a huge postgame smile from McMahon.

“This game, you never have it figured out,” McMahon said. “It’s kind of fun. It’s heartbreaking at times. It’s kind of frustrating. But it’s a game I love, and I’ll always love.”