The Cardinals' free fall continued Sunday with an epic 58-0 loss at Seattle that left Larry Fitzgerald's father to conclude that Arizona has quit on the season.

Coach Ken Whisenhunt apologized to fans after Arizona lost its ninth consecutive game. Larry Fitzgerald Sr. took to Twitter to express his frustration with the direction of his son's team.

"Definition of team quitting? 9 losses n a row. 9th loss 58-0! Injuries handling of offense worst nNFL. Adrian Wilson & Darnell Dockett situations!" he tweeted.

Wilson, in his 12th season with the Cardinals, has seen his playing time diminish in recent weeks and on Sunday expressed doubt he'd be back with Arizona. Dockett was fined a "six-figures" amount last week for allegedly spitting at teammate Kerry Rhodes and disobeying the team's plan to let the Jets score in a loss to New York two weeks ago, a source told ESPN.

Fitzgerald's All-Pro talents are being wasted with the Cardinals' unsettled quarterback situation, and with just three games left in the season, his streak of 1,000-yard seasons is in jeopardy of ending at five. Fitzgerald, who had just one catch for 2 yards in Sunday's loss, has just 652 yards this season. Fitzgerald has 11, 31, 23 and 2 yards in his past four games and just six catches in that span.

The 29-year-old Fitzgerald, who signed an eight-year, $120 million contract in 2011, hasn't publicly criticized his quarterbacks' play.

Fitzgerald Sr. tweeted that the last time his son had to endure this big a blowout loss was in high school and he put his son in a different school as a result.