The reigning NL champion Arizona Diamondbacks are expected to be pretty good this season, and the Colorado Rockies are expected to be pretty bad. That still doesn't explain what happened on Opening Day, especially in the third inning.

The D-backs entered the inning leading by a very reasonable score of 2-1. The Rockies had veteran starter Kyle Freeland on the mound and enough reason to think they were still in the game. Then Arizona got a hit. And another hit. And another hit.

Then 10 more after that.

All told, the D-backs scored 14 runs in the the third inning of a 16-1 win, setting a franchise record and an Opening Day record for the most runs scored in a single inning. They also broke a franchise record for most runs in an Opening Day — in three innings — and tied for the fourth-most runs scored in an inning ever.

Here are all 13 hits:

If text is more helpful to grasp what went down Thursday at Chase Field, here is the full play-by-play for the inning:

Geraldo Perdomo single
Ketel Marte single
Corbin Carroll walk
Lourdes Gurriel Jr. single
Christian Walker double
Gabriel Moreno single
Eugenio Suárez single
Blaze Alexander flyout
Alek Thomas double
Anthony Molina replaces Kyle Freeland
Geraldo Perdomo single
Ketel Marte single
Corbin Carrol walk
Lourdes Gurriel Jr. single
Christian Walker single
Gabriel Moreno double
Eugenio Suárez sacrifice fly
Blaze Alexander single
Jalen Beeks replaces Anthony Molina
Alek Thomas groundout

Freeland finished the game with a 38.75 ERA, which sounds like a lot until you see that reliever Anthony Molina has a 162 ERA after one game. Molina faced eight batters and got one out. Had the inning gone on one batter longer, Geraldo Perdomo would've hit for a third time.

Perhaps the wildest part of all this is the D-backs didn't hit a single home run or triple. They are the second team in modern MLB history to score 14 or more runs in an inning without a homer, joining the 1948 Boston Red Sox.

To the Rockies' credit, that was all the D-backs would get. Jalen Beeks, Victor Vodnik and Nick Mears combined to shut out Arizona for the final six innings of the game.

Obviously, this shouldn't set an expectation for the D-backs going forward, but it is undoubtedly a great way to start as the team tries to follow its World Series appearance with its first division title since 2011. As for the Rockies, well, it's going to be a long year.