MarketInk: Jack in the Box’s iconic antenna ball is coming to San Diego's Little League fields

MarketInk: Jack in the Box’s iconic antenna ball is coming to San Diego's Little League fields

A giant Jack in the Box head gazes at a fly ball. (Rick Griffin/MarketInk) Decades ago, in the early days of Jack in the Box, the fast-food hamburger chain promoted itself by distributing small plastic balls consisting of mascot Jack’s head that motorists stuck on the top of their car’s radio antenna. More recently, Jack’s noggin now towers over Petco Park, atop the right field foul pole. Starting this spring, Jack in the Box has announced that …