Current MLB ballpark · 1998 – present

Chase Field

Phoenix, AZ

Also known as Bank One Ballpark.

Chase Field, 2023 — Four Reserve Citizen Airmen from the 924th Fighter Group of the 944th Fighter Wing conducted a flyover with four A-10C Thunderbolt II Warthogs over game four of the Major League Ba — Chase Field, 2023 · U.S. Air Force photo by Staff Sgt. Tyler J. Bolken · Public domain · Wikimedia Commons · license read 2026-07-24

Opened: 1998
Capacity: 48,359
Surface: Artificial Turf
Roof: Retractable
League: NL
Elevation: 1086 ft
Orientation: 0° (N)
Time zone: America/Phoenix

How it plays

Every number is an index where 100 is league average. There is no such thing as one park factor — this park does different things to a triple than it does to a home run, and the only honest version is the whole row. Off 14,980 plate appearances in 2026.

	2026	2024-2026
Runs	100	106
Home runs	92	92
Triples	255	213
Doubles	93	111
Singles	104	103
Walks	99	99
Strikeouts	84	89
Value on contact	95	101
Expected on contact	100	101

How much of this is the park? Across 2022–2026, this venue's single-season value-on-contact index moved by ±3.7 points (a 10-point spread over 5 seasons). The league median is 3.0. Read a single season's figure with that much slack in it — the walls do not move, and the number does.

By the batter's side

Runs	102 RHB	98 LHB
Home runs	94 RHB	90 LHB
Value on contact	97 RHB	94 LHB

7,789 right-handed and 7,191 left-handed plate appearances — each side is half a season, so read these with at least the slack the combined figures carry — the band above is ±3.7 on twice this sample.

What FVR does about it

Every luck gap we measure at this park has −0.0187 subtracted from it, off 3,923 balls in play here this season. That is the number behind every board on this site, which is the only reason it is printed. It is not on the 100-is-average scale above: it is value on contact per ball in play, so it cannot be added to or subtracted from any index in this table. The two can even point opposite ways — Savant's runs index counts all offense, ours is only the residual against what the batted balls deserved.

Index figures: Baseball Savant, single-season and three-year rolling. What a park factor is, and is not →

The lore

The Pool at 415

Chase Field opened in 1998 as a first in American baseball — a retractable roof over grass — and built a swimming pool 415 feet from home plate.

Right-Center, Past the Wall

The right-center field gap at Chase Field measures 414 feet from home plate, and just beyond it sits a swimming pool — 415 feet out, rented as a suite that holds up to 35 guests. On May 12, 1998, Mark Grace became the first player to reach it on the fly, a home run that landed in water. It sits inside a structure that was already doing something no American ballpark had done before.

A Roof Over Grass

Construction began in 1996. The park opened in 1998 in downtown Phoenix, a block from where the NBA's Phoenix Suns played at America West Arena, as the home of the Arizona Diamondbacks. It was the first MLB stadium in the United States to feature a retractable roof over a natural grass playing surface. The playing surface is now artificial turf.

The dimensions run 328 down the left-field line, 376 to left, 412 to left-center, 407 to center, 376 to right, and 335 down the right-field line — deep in the gaps, generous to center. A dirt strip between home plate and the pitcher's mound, known as the keyhole, was a feature of the field until it was removed in 2019.

Travis Lee put on a show for the inaugural game on March 31, 1998, against the Colorado Rockies, recording the franchise's first single, home run, and RBI.

Four Home Wins

The moment that anchors the building came in its fourth season. Chase Field hosted Games 1, 2, 6, and 7 of the 2001 World Series against the New York Yankees, and the Diamondbacks won all four home games — taking the title in seven and denying the Yankees a fourth consecutive championship. The park also hosted the All-Star Game in 2011.

The Diamondbacks remain the only club to call it home.

Reporting: Wikipedia, MLB.com, Baseball Almanac. Park data: MLB StatsAPI and Retrosheet, via the Fever engine.

By the Desk · filed 2026-07-23 — the piece reads as of its filing; the park record around it is live · every fact in this piece comes from a filed, sourced research pack and clears an independent fact-check, and nothing is edited after filing.

The dimensions

Fence distances from home plate, in feet — the same venue.fieldInfo the scorecards draw their hit charts on.

Left field line	328′
Left field	376′
Left-center	412′
Center field	407′
Right-center	414′
Right field	376′
Right field line	335′

Home club

AZ Arizona Diamondbacks

Games we’ve scored here

70 games at this park in our books — every one transcribed mark for mark, reconciled to the official line. The most recent:

…and 58 more in the scorecard archive.

Where it stands

401 East Jefferson Street, Phoenix, AZ 85004. Open the map →

Sources

MLB StatsAPI · as of 2026-07-23
Retrosheet · as of 2026-07-23

The information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at 20 Sunset Rd., Newark, DE 19711.