Before: "The biggest problem I'm going to have in this fight," grins irreverent Pratt, "is deciding what to wear! Seriously - Biel's a poor man's Brittany Daniel and I think I'll treat her just the way I did Brittany: shabby." Biel non-plussed at the comparison - maybe Vicki missed all the successful title defences and big-name romps? "Pratt's typical fitness," sneers the actress, "all abs, no chin. I could win this with my jab like one of the old fuddy-duddies would, but I'm going to hurt Vicki and really tidy her up. Everyone talks about how fast she is, how strong for her size - but for every attribute of hers, I've got the antidote. People are going to be surprised at how easy this fight is for me - but that's why we sell tickets!" Biel in hulking wide pastel pink bandeau top, hot pink bikini bottoms - Pratt in boy cut mauve/purple horizontal bar print bottoms, mauve sport top, purple polo collar.

During R1: Vicki bright smile, bouncing in, looking to chop lightning one-twos onto Jessica's ja...and VICKI GOES DOWN! Biel in a relaxed crouch, left low, right at her chest, just sliding back easy from Pratt's bounding rush and timing an all-in right hand clean to the chin. Pratt sent scooting to her backside and elbows, giving her curly head a shake - she's up, but tamed - legs badly buzzed. Jessica on like a pro - lifting a stinging jab off her hip, shooting sizzling right hands - hopping, swivelling her hips into licking hooks to wear out that muscular blonde body. Biel strong on the attack, but smart - getting off hard, but palming up and stepping to either side, keeping Vicki's back to the ropes and changing up distance on her. Pratt chagrined, stroked and drilled, but recovering well from the knock down - she's disappointed in herself at the bell.

R2: Pratt on her toes, Manny Pacquiao-like as she tries to bop in off Biel's left shoulder, touch her the jab and thrust home a rapid right to the chin. Biel canny - running blonde onto the jab, sliding back, making shorter woman cover ground and take risks. Biel with the right hand coiled at her chest, ever-ready to turn suddenly on Pratt's chin - Vicki's very fast and intimidating on the attack, but she carries her head on a line - Biel's tracking it well. Good bounce-back round for Vicki, but Jessica calmly using the ring, spacing Vicki out, controlling the explosive blonde with sound boxing and the threat of that counter-right.

R3: Pratt slashing in - Biel countering beautifully, almost using the blonde's speed against her. Jessica touching Vicki the jab, slowing her just a touch, then ringing her up right hands on the chin - blonde really getting clocked, stubbornly regrouping and trying the same attack. Again and again, Jessica lays down the law, landing cleaner and cleaner blows, drawing gasps from the crowd. Pratt breaking down visibly - going wobbly butt in the second minute, starting to stagger in, stumble out after soaking up the shot - Biel just sliding, circling, measuring her quarry. Jessica cautious again - Vicki looks hurt, but brunette doesn't press - content to dab at Pratt's face the jab, shoot long right hands down into the body to get Vicki cringing at the bell.

R4: Biel with the right hand high, left hand low - very supple and pretty as she ropes Vicki a lashing hook, swing-pivots left around the punch, shifts her hips and chops down the right hand - gorgeous, athletic stuff. Vicki with a blasted look, mouth open, eyes glassy - she's on her heels, uncertain and getting tagged. Second minute - Pratt decides to attack - Jessica stepping back in good order, smooths a tidy right hand onto onrushing blonde jaw, glides the tight left across jaw, all shoulder and forearm on follow through, then sidesteps to guide Vicki face first into the ropes. Pratt nearly going down, righting herself, but Biel all over her! Jessica poking one-two up top, then setting her hips to lick home that vicious hook on the ribs - Pratt groaning, buckling. Jessica licking the left up and down the flank, turning in and down with tearing right hands - it's all too much. Ref steps in, cradles a punch-besotted Pratt to safety - TKO4 Jessica Biel.

After: Biel beaming, strutting the ring - she's just become the most dominant champ in boxing, turning back the woman many had tabbed as her logical successor. "I exposed Vicki," Jessica says charitably in post fight. "I brought out the punk in that girl. I smartened her up with that knockdown right away, then just went to work on her - she STILL doesn't know what happened." First knockdown might have been lucky, but Biel really targetting chin with precision, playing Pratt just right and outclassing the dynamic blonde thereafter - it's an amazing performance for a young champion who just seems to be getting better and better. Pratt devastated - all the physical talent in the world, but lack of championship rounds might have hurt her - she didn't seem to have a plan B after getting rocked and just couldn't turn it around.