Saturday was rough for international sports fans — almost 15 hours of total Wimbledon and World Cup coverage, enough to challenge the schedule-shifting powers of even those who possess a dual-tuner TiVo and an extra TV in the backroom, as I do. I felt like the couch-potato version of a soccer player constantly having to change direction: up early for a few ladies’ third-round matches at Wimbledon on ESPN2; then to ABC to watch England’s penalty-kick loss to Portugal in real time; then, since I was a few hours behind, cranking up TiVo for NBC’s coverage of Andre Agassi’s grass-court swan song — a barely competitive dismissal by Rafael Nadal; then over to ESPN and soccer’s Zinedine Zidane, who embodies the sport’s “beautiful game” appellation — stretching his career by one more match as France deservedly won over Brazil to cinch an all-Europe World Cup semifinal; then a halftime lunch; then back to ESPN2 tennis for a not-so-startling-anymore Andy Roddick defeat, this time to lanky Scottish teen Andy Murray, whose tricky, in-the-zone racquet work gave Britons in the stadium something to cheer about after listening on earphones to their nation’s footballers go down in Germany. By day’s end, my eyes weren’t even tired. I had won an international sports stamina contest. My patient wife, on the other hand, penalized me for hogging both sets by insisting she get to use it on Sunday. Deservedly, I had been red-carded.