One hundred losses. It's baseball's version of The Scarlet Letter.

In their first 21 seasons, the Rockies never suffered the ignominy of triple digits in the loss column. They came close in 2012, when they finished 64-98.

Two seasons later, the specter hovers again.

"It's extremely important to me that we don't lose 100," third baseman Nolan Arenado said Saturday before the Rockies hosted the Miami Marlins at Coors Field. "We don't think about it every day, but it's important that we don't become the first.

"We know we have the worst record in the National League. We know that, but we still don't want to be the team that loses 100 games. Unfortunately, that's a goal we have to turn to now. We don't want to have the worst record ever."

Arenado backed up his defiant words in the 13th inning as the Rockies prevailed 5-4. He scored from second base on Corey Dickerson's walk-off single against Marlins reliever Sam Dyson through the right side. Arenado led off the 13th with a line-drive double off the left-field wall.