ARLINGTON -- Everything has seemed to go right for the Rangers this season. It’s easy to feel that way when they’ve got the second-best record in the Majors (39-20) while sitting atop the American League West.

In Texas' 4-3 win over St. Louis on Monday night at Globe Life Field, it felt like even when things went wrong, they still ultimately ended up a little bit right.

It was a tighter game than the Rangers have been used to in recent weeks, tied in the bottom of the ninth after the Cardinals' two-run rally in the eighth. But the offense delivered nonetheless as Nathaniel Lowe drove an opposite-field single to left to score Marcus Semien from second base.

Texas’ second walk-off win of the season -- and the fourth walk-off hit of Lowe’s career -- allowed the Rangers to open the three-game set with their fourth straight victory.

“It was great,” Lowe said. “[The Cardinals are] a lot better team than their record, and we haven't had a close one in a while, but we were able to push one across when we needed it.

“I was just trying to remind myself that I'm confident and excited to be there [in that position]. I’m not thinking about a left-hander that could throw 98 [mph] behind me. I don’t know, I was just reminding myself that we're supposed to have no spirit of fear in us, and that's how it goes.”

The reigning AL Silver Slugger Award-winner at first base, Lowe finished 2-for-5 with a double against the Cardinals, but he also credited Semien with drawing the one-out walk that set him up for the walk-off hit.

“All you gotta do is get on base, and anything can happen there,” Lowe said. “And he got on base, and we did what we needed to do.”

As Semien rounded third base and sprinted home in the ninth inning, he flashed a safe signal as his foot touched the plate well before the throw reached the catcher. Then he joined Lowe and the rest of his team for the on-field celebration. It was a lot of emotions for a guy who’s typically pretty stoic.

But that’s pretty much been the story of this season for the Rangers, too.

It’s all run through Semien, who in addition to scoring the winning run, extended his career-high hitting streak to 24 games with an RBI single that gave Texas a 3-1 lead in the second inning.

“Everybody is [having fun], but Marcus … looks like he's having a great time,” said manager Bruce Bochy. “And he should be with the type of baseball he's playing. I enjoyed watching him. I'm a fan watching Marcus defensively and offensively. He's the guy that gets things going leading off the game. He got the walk that got us going there [in the ninth]. That's what we need to do tonight.”

Much like the ending, things went right for the Rangers all game, even when it seemed like they had gotten themselves in a pickle.

In the second inning, a dropped fly ball from Adolis García allowed Willson Contreras to reach and later score an unearned run to give the Cardinals an early one-run lead against Martín Pérez. Texas immediately put up a three spot in the bottom half, while Pérez dominated the St. Louis lineup for the rest of the game, allowing just that one unearned run in seven innings.

“We’re going to score runs,” Pérez said. “We can score runs at any time of the game. That’s why I’m trying to go deep in the game and get outs, because I know we’ve been having a good time hitting the ball. We score a lot of runs, and [the staff] can go out there and pitch without too much pressure."

Unfortunately, the same dominance could not be found for Grant Anderson, who followed Pérez on the mound. Making just his third career appearance, Anderson allowed a leadoff walk and back-to-back singles to load the bases with no outs in the eighth inning. A sacrifice fly from Paul Goldschmidt and an RBI double from Nolan Arenado tied the game going into the final frame.

But once again, things fell the Rangers’ way, and a shutdown inning from closer Will Smith in the top of the ninth set up the walk-off in perfect fashion.

“It’s a lot [of fun],” Lowe said. “We understand that there's a lot of baseball left, but winning is great.”