Chicago ? Until now, Alex Rodriguez never had a reason to look down at the third-base coach in an All-Star game.

“In the past, we didn’t have signs — takes, hit-and-runs,” the Texas shortstop said. “I guarantee you we’ll be going over that. If it’s the seventh or eighth innings, I know we’re going to see some bunts laid down.”

Call it a sign of the times. With home-field advantage in the World Series at stake, signals and strategy are set to make a comeback in baseball’s summer showcase.

That was clear right away. At Monday’s workout, Baltimore’s Melvin Mora was the first player to take batting practice and he began his round with four straight bunts — uncharacteristic for a guy hitting .349.

“You want an exhibition? Go to spring training,” said St. Louis manager Tony La Russa, an NL assistant coach. “This is meant as a competition, not an exhibition.”

In fact, the wheels were spinning well before starters Esteban Loaiza and Jason Schmidt threw their first pitches tonight at U.S. Cellular Field.

Roger Clemens was added to the AL team, and Barry Bonds was moved from the outfield to the NL’s designated hitter.

Clemens recently earned his 300th victory and this was a nice way to honor him in what likely is his final season. But the well-rested Rocket was ready to pitch and took the place of Barry Zito, who worked eight innings Sunday.

Zito seemed startled to find out he’d been bumped off the active roster. Still, the reigning AL Cy Young winner added, “I think Roger Clemens is a blue-chip name. I think, yeah, he deserves to go out here.”

San Francisco's Barry Bonds takes the field during the National League workout. Bonds, who will serve as the designated hitter, and his teammates were preparing Monday at U.S. Cellular Field in Chicago for tonight's All-Star game.

Because last year’s All-Star game ended in a 7-7, 11-inning tie when the teams ran out of pitchers, the commissioner’s office increased the rosters to make sure each side had 12 pitchers available — and wanted each of them to be ready.

NL manager Dusty Baker, meanwhile, tinkered with his lineup.

Bonds, elected by fans to start in the outfield, will DH, while Jim Edmonds will play center, between Albert Pujols and Gary Sheffield.

Baker had to get approval from the commissioner’s office to move Bonds, and admitted he initially wasn’t sure he’d get it. Bonds said he was fine with the switch.

“It’s a good thing. We didn’t have a center fielder,” the San Francisco slugger said. “Nobody knew the rules.”

Certainly there was more of an edge going into this game because of what it means. Coming off last year’s disastrous tie in Milwaukee, baseball wanted a way to juice up the All-Star game, and tying it to the World Series was its solution.

“I don’t doubt there is a better way to determine home-field advantage,” La Russa said. “But maybe the game had lost a little in the luster. If this adds a little extra, that’s fine.”

La Russa speaks from experience. Managing the AL team in 1991, he ordered up the last sacrifice bunt by a position player in an All-Star game. He sent up Ozzie Guillen to pinch-hit for Cal Ripken — who already had hit a three-run homer and a single on his way to winning the game’s MVP award — and called for a bunt.

Right after Guillen did his job, Rob Dibble followed with the last intentional walk in All-Star play, according to the Elias Sports Bureau. Rafael Palmeiro drew the walk and Harold Baines followed with a sacrifice fly in the AL’s 4-2 win at Toronto.

“It was an insurance run we needed,” La Russa recalled.

A-Rod figures there might be more of the same this time with Anaheim’s Mike Scioscia managing the AL.

“I know Mike and the way he loves small ball,” Rodriguez said. “Mike knows what home filed is all about. It got him a world championship.”

Garret Anderson, who got the big hit for Anaheim in Game 7 last October, won another one for the Angels on Monday night. He outslugged Pujols to win the Home Run Derby.

Come Tuesday night, it may not be a home run that decides it. Jason Giambi also expects more strategy, unlike the past.

“We never had signs in the three All-Star games I played,” he said. “Joe (Torre) was managing and he basically said to do what you wanted at the plate — swing 3-0 if you want, just don’t get hurt.”

“But you might even some bunting in this ballgame,” he said.

Also, some players might stick around longer.

The last time someone played an entire All-Star game was 1997, when outfielders Ken Griffey Jr., Brady Anderson and Ray Lankford all did it, Elias said.

Of course, it won’t rival what happened in the first All-Star game, played in 1933 at old Comiskey Park, which was across the street from where U.S. Cellular Field sits. In that contest, AL manager Connie Mack did not substitute for a position player until Babe Ruth was pulled for defensive replacement Sam West in the ninth inning.

In recent years, it’s been a lot different. Nothing close to 1987, when Dave Winfield played all 13 innings in the AL outfield at Oakland.

“Players would be showered by the third or fourth innings, on their jets and on the way home,” Rodriguez said.

The NL leads the overall series 40-31 with two ties. The AL had won five in a row before both teams ran out of pitchers last year.

Todd Helton, hitting .349 and starting at first base for the NL, was curious to see how things would play out tonight.

“It will be interesting to see if we have signs,” the Colorado standout said. “If we do, I’d guess a lot of people will be looking because they probably won’t be hard to figure out.”