William Diddel: Indiana's Most Prolific Golf Architect

William Hickman Diddel does not get the press of Donald Ross or A.W. Tillinghast, but he sat in the same iconic 1947 photograph that founded the American Society of Golf Course Architects. Born in Indianapolis in 1884, Diddel went on to design close to 300 golf courses across the United States, the bulk of them in Indiana, Illinois, Michigan, and Ohio. Stymie has 53 of his open courses on file across 11 states, with build dates stretching from 1904 to 1978.

From Five-Time State Amateur Champion to Architect

Before he routed a single hole, Diddel was the dominant amateur golfer in Indiana. He won the Indiana State Amateur Championship five times between 1905 and 1912, and at his peak in 1911 he played to a +3 handicap. He was also a four-sport letterman at Wabash College, an alumnus of the Indiana Basketball Hall of Fame, and an early caddie for British Open champion Sandy Herd. After running his family's life insurance agency and a Franklin Motor Car dealership, Diddel was asked by Highland Golf and Country Club in Indianapolis to finish a course originally routed by Willie Park Jr. He completed the project in 1922, and that work pushed him into architecture full time.

The Strategic School on a Public Budget

Diddel built during golf's Golden Age, but he served a different audience than his coastal peers. Many of his clients were small-town municipalities, fraternal clubs, and Midwestern families with modest budgets. The Encyclopedia of Indianapolis places his work squarely in the strategic school of design, the philosophy that asks the golfer to think about angles and shot selection rather than survive sheer punishment.

Long-time ASGCA executive Paul Fullmer summarized the Diddel approach this way: he believed you could contour the land subtly to challenge golfers without creating large mounds, water hazards, or 100 sand traps, and could do it within a reasonable budget. That economy shows up across his portfolio. Coffin Golf Course in Indianapolis, his 1931 reworking that became a Works Progress Administration project employing nearly 1,000 men, still rates a 141 slope from the back tees. Forest Lake Country Club outside Detroit pushes 7,082 yards with a 142 slope. Neither course relies on water or extravagant earthworks to defend par.

Diddel's Signature: Subtle Greens and "Diddel Bumps"

Indiana architect Ron Kern, whose father was mentored by Diddel, identified the recurring trait in his courses. They are tougher than they look for the better player and manageable for everyone else. Kern called the small ground swells Diddel placed in front of greens "Diddel bumps," a feature that forces a precise approach without adding sand or water. The greens themselves tend to be wider than they are deep, a routing choice that rewards distance control over short-game wizardry.

You can see this idiom across the Indiana portfolio: Beechwood Golf Course in La Porte (1933), Elcona Country Club in Bristol (1956), Foxcliff Golf Club in Martinsville with a 140 slope, and Brookshire Golf Club in Carmel, opened in 1978 near the end of his career. Outside Indiana, Diddel's reach extended to Edgewood Valley Country Club near Chicago, Jupiter Island Club in Florida, and Brynwood Country Club in Milwaukee.

Mentor to Pete Dye, Champion of Compact Golf

Diddel's most consequential personal influence may have been on a young Indianapolis couple weighing whether to leave the insurance business for course design. Pete and Alice Dye visited Diddel at his cabin on the Woodland Country Club property in Carmel, Indiana for advice. He warned them the work was an uncertain living. They went ahead anyway, and decades later Pete Dye returned to redesign Diddel's beloved Woodland in 2002.

Diddel also worried publicly about distance creep long before the modern ball debate. He partnered on a short-course concept called Trey-Par north of Indianapolis in 1932, a half-century before Dave Pelz built his short-game schools. He lobbied manufacturers for a reduced-flight ball that would let municipalities build smaller courses on smaller parcels, and he proposed to Cincinnati that it install short courses in city parks to introduce new players to the game. He thought golf needed a softball-to-baseball cousin. None of those ideas caught on at the time, and all of them sound familiar today.

A Career That Spanned Eight Decades

Diddel served twice as ASGCA president, in 1954-55 and again in 1965-66, and was a charter member of the Indiana Golf Hall of Fame in 1964. He also designed the original Indianapolis Motor Speedway course in 1929 and the 1952 U.S. Open venue at Northwood Club in Dallas. He kept playing the game he designed for, qualifying for the inaugural USGA Senior Amateur in 1955 and reportedly scoring his age or better well over 1,000 times. He died in February 1985, two months shy of his 101st birthday.

Many of his courses have been quietly altered over the decades, the strategic-school subtleties traded for modern bunkering. The 53 Diddel courses on Stymie are a chance to play, or at least look up, the work of a designer who proved that a thoughtful routing on the right piece of Midwestern ground could outlast almost any trend in the business.

View all courses by William Diddel