SAN FRANCISCO -- Of course it was going to end like this.

The Giants and Dodgers staged an NL West race for the ages, then split four games in the National League Division Series, setting up a winner-take-all showdown at Oracle Park on Thursday night.

"We knew it was going to come down to a Game 5," said Giants right-hander Logan Webb.

And so it has. The Giants and Dodgers, sitting on 109 wins apiece, will play one game to decide their 2021 fortunes.

• History of Dodgers-Giants winner-take-all games

Here's how it will be decided:

1. Which manager gets it right with his starting pitcher?
It's a decidedly unique circumstance, a Game 5. No game the day before. No game the next day. It's winner-take-all, so every pitcher is available.

“It's just nice to know that, in a Game 5 scenario, everybody's going to be available,” said Giants manager Gabe Kapler. “Everybody's going to be strong, everybody's going to be wanting the baseball.”

The Giants have won 11 of Webb's last 12 starts. The Dodgers, meanwhile, are getting creative. They've won each of left-hander Julio Urías' past 12 starts, but will turn to right-hander Corey Knebel as their opener on Thursday night, with Urías presumably slated to cover the bulk of the workload. The last time Knebel started against the Giants, he threw two scoreless innings against them at AT&T Park on Sept. 3.

• Roundtable: Game 5 shaping up to be a classic

Beyond Webb, Knebel and Urías, these are two excellent pitching staffs with most of their arms fresh. That'll leave Kapler and Dodgers manager Dave Roberts with some serious decisions to make. Surely, there will be an opportunity to pinch-hit in the early innings in a high-leverage spot. Surely, there will be a matchup that might better suit a reliever in the middle innings.

How much faith do they show in Webb and Urías (whenever he enters the game)? Lift your pitcher one batter too soon or one batter too late, and the consequences might be disastrous.

2. Can the Dodgers not chase?
The Dodgers have built a reputation over the past decade as one of the sport's most disciplined offensive teams. They weren't in Game 1. Here's a look at the 21 times Los Angeles hitters whiffed against Webb:

Webb got swings and misses with 52% of his changeups and 54% of his sliders. In total, he got 19 whiffs with his two offspeed weapons, and only eight of those were on pitches that ended up in the strike zone.

"You want your hitters to be aggressive," Roberts said. "But to their zones. When we start expanding, Logan is an east-west guy, trying to get us to expand. If we can stay locked in on our zone, that's when we're at our best."

If the Dodgers lay off those pitches, it'll be a different story in Game 5. Easier said than done.

3. Can the Giants solve their woes vs. LHP?
With Knebel starting, how will the Giants set their lineup once the lefty Urías enters the game.

"You can expect the guys that we normally have against quality left-handed starters in our lineup tomorrow," Kapler said before the Dodgers swapped their starting pitcher. "I mean, there's some ordering stuff and some positioning stuff that we always have to work through, but I don't anticipate any big surprises."

Instead, the big surprise came from the Dodgers' side. Now the Giants must decide how they want to counter. Do they put one of their lefty platoon bats higher in the order to assure an at-bat against Knebel? If so, that could mean an extra at-bat for a lefty later in the game against the lefty Urías.

That said, the San Francisco righties haven’t been very effective against left-handed pitching anyway -- especially lately. Since the All-Star break, the Giants are 11-11 vs. left-handed starters (compared with a 39-12 mark vs. righties).

At the Trade Deadline, they went out and acquired Kris Bryant in an effort to help solve those issues. Instead, Bryant has actually been much better against righties with San Francisco.

Kris Bryant vs. LHP
With Cubs: 1.137 OPS in 91 plate appearances
With Giants: .581 OPS in 62 PAs

As left-handed challenges go, Urías is a particularly tough one for the Giants’ righty-heavy lineup. He's limited right-handed hitters to a .605 OPS this season. Can the Giants break through against a tough left-hander? Kapler thinks so.

"The capability is all there,” he said. “The at-bat quality has been there. Sometimes it doesn't show up in the box score.”

4. Any wild cards in play?
We already have one, with Knebel tabbed to start Game 5 in a stunning turn of events. Any other surprises in store?

According to his manager, Max Scherzer almost certainly won't pitch on Thursday night.

"It's highly unlikely," Roberts said. "The goal is still to win the World Series, and having Max starting Game 1 in the NLCS -- if we get there -- increases that chance. But obviously, I'm not immune to the fact that you don't get there unless you win Game 5."

Whatever Roberts has to say on the subject, Kapler is choosing not to listen.

"We have to always plan for every possible scenario," Kapler said. "What I'll say is I'm not going to be surprised by anything. The Dodgers aren't going to be surprised by anything. It's where we are."

Indeed. The Dodgers would prefer to avoid Scherzer. But in winner-take-all baseball, sometimes the best-laid plans get scrapped.

For the Giants, Game 2 starter Kevin Gausman and perhaps even Game 3 starter Alex Wood are on the table. Wood, of course, has an extensive history of working out of the bullpen in the postseason and he could be a useful left-handed arm for Kapler to deploy.

• 'Great friends' Webb, Gausman integral to Game 5

5. Oracle Park advantage?
The Giants and Dodgers met 19 times during the regular season. The Giants won 10, the Dodgers nine. The Giants finished with 107 wins, the Dodgers 106.

So here we are, settling this score at Oracle Park and not Dodger Stadium. What, if anything, does that home-field advantage mean?

• 5 reasons NLDS Game 5 will be epic

"You can feel that support," Kapler said. "It's meaningful. It changes the energy and it boosts confidence and gives you adrenaline, and we've all been talking all year about how some of that adrenaline can be used and channeled to good performance. So yeah, I think it means something."

Here's a tangible "something" it means: The Dodgers are going to start neophyte outfielder Gavin Lux, because he’s been red-hot. But they aren't entirely sure where to play him. Dodger Stadium would've been familiar. Oracle Park, meanwhile, is one of the trickiest outfields in baseball.

As for the Dodgers' readiness to handle an atmosphere like this one? Well, it's not the first time. This is their ninth straight trip to the postseason, after all.

"I like the way that our guys have been there," Roberts said. "The emotions that we'll be able to manage, I think is great. I love our players. Now, I think it's just going out there and executing a plan offensively, preventing runs -- from Julio to the guys behind him -- and doing enough to win a ball game.

"It's fun that all we've gone through, both sides, comes down to one game."