"Costco was a real punch in the gut," said David Robertson, publisher of the Nilson Report, a major trade journal for the credit card industry.
Trouble at AmEx: Some cardholders can leave home without it →
"Anytime I sit for a handful of days I feel good as gold," Robertson said. "I think it will be rest a little while, play catch and get a bullpen and get right back in there."
Yankees closer Robertson headed to disabled list →