They have gone from first to worst:  Tampa business executive Tina Greene and her ex-husband Ken were the last to arrive at the pit stop on Sunday’s installment of “The Amazing Race.”

But they got a free pass because it was a non-elimination round.  So Tina and Ken will carry on for at least another week.

This was another week where the outcome of the race hinged on incompetent cabbies.  On this season, teams have been held up by vehicle breakdowns and cab drivers who don’t know where they are going.  The biggest lesson of “Amazing Race” this year is watch out when taking a cab in a backward nation.

Tina, who lives in Tampa, and her estranged hubby, Ken Greene, an ex-NFL player who lives in San Diego, started off this season as strong contenders, winning back-to-back legs of the race. But in the past two episodes, they have fell behind.  This week, there was a lot of attention on Tina snapping at Ken for not keeping pace with her demands.

Once again viewers were reminded that the Greenes are using the race as a test to see if they can patch-up their marriage.  (In case, anyone forgot Ken cheated on her, blah, blah blah).

So far, national reaction to Tina has not been favorable. She’s been written up as a shrew in most online and in many print recaps while Ken is coming off as a doormat.  This could be the result of editing for dramatic effect. But it’s obvious that Tina is a Type A+ personailty and Ken is super laid-back.

Things got dicey on this episode with Tina barking orders at Ken while he was painting little cars (another dumb competition).

Frat boys Andrew and Dan could paint but they couldn’t iron (another weird task). Ken and Tina had taxi troubles that slowed them down.

Brother and sister team Nick and Starr were first place one more time and each won an electric car. Next week, we are promised more fireworks between Ken and Tina.