Lagat has won a record eight titles in Millrose's signature event, the Wanamaker Mile.

WSJ: Lagat breaks US indoor 2-mile record at Millrose

And this, aptly enough, is a consumer reaction that John Wanamaker would have expected all along.

ECONOMIST: Internet advertising

Lagat has become synonymous with Millrose after winning a record eight titles in its signature event, the Wanamaker Mile.

WSJ: Lagat seeks another record at Millrose Games

Zoe Wanamaker, Jane Lapotaire and Dame Judi Dench are all actresses of great power who haven't got the roles.

BBC: Meet Mr Cleopatra

The Wanamaker was won by one of Lagat's teammates on the U.S. Olympic 5, 000-meter team at last year's London Olympics.

WSJ: Lagat breaks US indoor 2-mile record at Millrose

The women's Wanamaker was won by Canadian Olympian Sheila Reid, but the star of the show was the second-place finisher.

WSJ: Lagat breaks US indoor 2-mile record at Millrose

It will be performed at the candle-lit Sam Wanamaker Playhouse, the Globe's new indoor Jacobean-style theatre which is still under construction.

BBC: Shakespeare's Globe sets up youth company

Matthew Centrowitz won the Wanamaker in 2012 in Lagat's absence.

WSJ: Lagat seeks another record at Millrose Games

The old John Wanamaker adage about not knowing which half of your advertising works has reached the point where most advertisers roll their eyes at the thought of it.

FORBES: Advertising Means Nothing If You Don't Have Predictability

He's also the U.S. record holder in the 1, 500 meters, the mile, the 3, 000 meters and the 5, 000 and won the Wanamaker Mile a record eight times at Madison Square Garden.

WSJ: Lagat ready for 'challenge' of NYC Half

The Wanamaker Problem is vanishing as companies like Google are able to show advertisements that an individual is likely to click, and that are likely to result in more actual purchases.

FORBES: Moving Healthcare from the 'Mad Men' Era into the Big Data Age