Wednesday 18 May 2022

For Guts or for Glory: was the 2021 Tour de France attrition influenced by the upcoming Olympics?

When looking at the withdrawals from the 2021 men's Tour de France; there were a lot, but not that many more than in 2020 - (details here - https://fulltimesportsfan.wordpress.com/2021/07/21/tour-de-france-2021-data-doodles-week-3/). One possible question was "is the increase in withdrawals due to the 2021 course being harder, or because people were more willing to drop out than usual because of the up-coming Olympics?" 

@rorygaron (https://twitter.com/rorygaron) on Twitter suggested a good comparison that might answer the question - look at the withdrawals from the 2021 Giro Rosa. 

In many ways, it's a perfect comparison, the Giro Rosa being the most well known women's race, it being another grand tour that was just before the Olympics. However, it was likely to have fewer "I'll drop out so as not to risk my Olympics" drop outs because it was further away from the Olympics (finishing on the 11th of July vs the 18th of July, with the first of the Olympic road cycling events on the 24th of July). 

The plan was to map out the Giro Rosa withdrawals, and see if their pattern matches the 2020 or 2021 men's TDF more, the idea being that: 

If the curve for the 2021 Giro Rosa resembles the 2020 men's TDF pattern, the increased withdrawals in the TDF could have been due to increased "Olympic" withdrawals.  

If the curve for the 2021 Giro Rosa resembles the 2021 men's TDF pattern, no, the increased number of withdrawals are probably due to the race conditions. 

There are, of course, certain caveats, the Giro Rosa is over a smaller distance, there are smaller teams and due to funding (or lack thereof) there is less technical support e.g. soigneurs etc so it can be harder for the racers to overcome wear and tear damage. There is also one more team in the Giro Rosa than in the men's TDF.

Riders remaining at the end of the 2021 Giro Rosa

  ErEACJ.png 

3 of the teams were completely wiped out with no riders reaching the finish while 3 teams had no drop outs at all.

Withdrawals by stage 

  ErElWz.png 

Looking at this chart, my first reaction is WTF happened in stages 4 and 10. I looked it up, stage 4 appears to have been an unfortunate mix of difficult time trial with a very fast winner, but from the stage profile, what happened with stage 10 is inexplicable, I mean yes it was the stage after the queen stage but still. One possible cause for the late attrition is that the Giro Rosa, unlike the TDF, was not split into weeks and there were no rest days.

Kaplan Meier chart of all withdrawals

  ErEurj.png 

You can see the effect of stage 4 in the overall Kaplan Meier.

Team Kaplan Meier

  ErEENn.png 

Looking at the team version, my first question is what happened to Team TIBCO-SVB? It turns out that both they and Bizkaia Durango had to withdraw their teams due to COVID - Article on Tibco and the article on Bizkaia Durango.

Reasons for Withdrawals

  ErESlc.png 

The Giro Rosa had more morning Did Not Starts than the men's TDF (36% vs 21%), ~ the same percentage of mid-stage abandonments/DNFs (40% vs 42%) and fewer Over Time Limit withdrawals (24 vs 37% - and all of those were in the same stage, stage 4). 

If we compare the rate of withdrawals, the Giro looks much worse.

  ErEctW.png 

 However, if we the spread the points out so that they cover the same time span (cheating I know, that's why I've not joined the points up on the "roughly relative curve"), the curves don't look all that different until right towards the end of the Giro Rosa, when we know there were at least a couple of Olympic dropouts. 

ErEge1.png 

So, what can I say from this? Mostly that the jury is still out. 

One obvious further check would be to do the same thing for the 2020 Giro Rosa and see if there's a difference. 

For the data on withdrawals, what type they were and which stage they happened on, I relied on Pro Cycling Stats - https://www.procyclingstats.com/race/giro-d-italia-femminile/2021/gc/startlist/roster-with-dropouts 
https://www.procyclingstats.com/race/giro-d-italia-femminile/2021/gc/stages/all-stage-profiles https://www.procyclingstats.com/race/giro-d-italia-femminile/2021/gc/stages/winners 

 For the explanations as to what happened on each stage, I found Cycling News invaluable.

Saturday 14 May 2022

Formula 1 2022 - Miami Grand Prix

I was not surprised that the Miami Grand Prix was not a success. 

I don't actually mind the ridiculous bombast (unlike most F1 fans; for some reason, high tech sports attract people who do not like change), but it was always going to be a boring race because it's a street circuit. I summed up my views two years ago in Just Say No To Street Circuits and I haven't changed my mind. 

Streets are too narrow to allow racing. 

I am aware that Ferrari got a 2-3 and objecting to that is just a sign of Ferrari fans's excessive everything, but I am giving Sainz jnr's right front wheeljack man a yellow card after that stop. Mistakes cannot be allowed to creep in. 

I understand the urge to shout at the strategy team, like the BBC commentators did, but Andrew Benson also on the BBC made a very good point that there's little strategists can do when you're in a car with less straight-line speed on a circuit that doesn't allow overtaking*. 

It does mean the engineering and aero teams are on a yellow card. Go faster than the Red Bulls! Eo7CsG.png 

* I became a lot fonder of Benson after Grosjean's crash when he was so clearly the adult in the commentary box.

Wednesday 4 May 2022

Book Review - The Puffin Book of Funny Stories

The LibraryThing entry says by Helen Cresswell, but it's more collected by her and with introductions by her (and one of the bits is excerpted from one of her books).

I strongly suspect I got this when I was still in primary school.

The book is a bunch of funny excerpts from funny books some of which were aimed at children.

Reading it back now, I am fonder of some of the stories than I was and the collection will always have a special place in my heart for introducing me to Three Men In A Boat.  The book used The Cheeses, which makes sense because it's one of the funnier free-standing bits and of the other options both The Packing of the Luggage and Uncle Podger are probably funnier with more life experience.

The book may also have been my introduction to Adrian Mole and one day I will get round to reading Witch Week.

No LibraryThing recommendations, because I don't think enough people have reviewed it.

Monday 2 May 2022

Formula 1 2022 - Emilia Romagna Grand Prix

It's not late *just* because I'm sulking. 

I didn't like sprint races, even before Ferrari decided to screw up tyre strategy in this one. Now I really don't like them. 

The race went no better, in between Ricciardo happening to Sainz jnr, and Leclerc happening to himself. 

I am giving one yellow card each to the strategy team and Leclerc. AeAjgj.png 

Of course, the first truly bad race of the year for Ferrari happened at Imola. I think I am just going to have to declared it cursed and move on.