Victor Campenaerts' mechanical failure proved costly as Primoz Roglic won the stage nine time trial at the Giro d'Italia on Sunday.
In the final stage before the first rest day, riders had to negotiate treacherous conditions over the course of the 34.8km time trial in San Marino.
Campenaerts looked set to storm into a healthy lead, but his hopes of winning his first Grand Tour stage took a blow when he suffered a mechanical issue, with reports suggesting the Belgian's chain had dropped.
The European time trial champion later aired his frustration that he and his Lotto Soudal team had not prepared for bike changes, and the swap cost him vital seconds.
Despite completing the stage in 52:03, Campenaerts lost his lead when stage favourite Roglic stormed over the line 11 seconds quicker than his rival.
"I can say I am disappointed," Campenaerts posted on his official Instagram. "The good news is that I felt super strong. But I was so close to my first grand tour stage win!"
Roglic's triumph – his second stage win after victory in Bologna on the opening day – lifts the Jumbo-Visma rider up 10 places up to second, within two minutes of overall leader Valerio Conti, who finished three minutes and 34 seconds off the pace.
Simon Yates' underwhelming ride was stage nine's major shock, with the Briton losing over three minutes to Roglic. Bauke Molemma rounded off the podium, with Vincenzo Nibali coming in at fourth.
CONTI TAKES IT EASY WHILE YATES SLIPS UP
While Roglic's stunning performance has put him well in the hunt, Conti kept himself ahead with a measured ride.
With no need to take any risks heading into Monday's rest day, pink jersey holder Conti kept it steady in the wet to time 55:26.
Yates, meanwhile, had less success. Considered a strong contender for the stage, the Mitchelton–Scott rider struggled with the adverse conditions.
1. Primoz Roglic (Jumbo-Visma) - 51:52
2. Victor Campenaerts (Lotto Soudal) + 0:11
3. Bauke Mollema (Trek-Segafredo) + 1:00
4. Vincenzo Nibali (Bahrain Merida) + 1:05
5. Tanel Kangert (EF Education First) + 1:10
1. Valerio Conti (UAE Team Emirates) 36:08:32
2. Primoz Roglic (Jumbo-Visma) + 1:50
3. Nans Peters (AG2R La Mondiale) + 2:21
1. Pascal Ackermann (Bora-Hansgrohe) 150
2. Arnaud Demare (Groupama-FDJ) 98
3. Caleb Ewan (Lotto Soudal) 91
King of the Mountains
1. Giulio Ciccone (Trek-Segafredo) 32
2. Primoz Roglic (Jumbo-Visma) 22
3. Fausto Masnada (Androni Giocattoli-Sidermec) 18
Monday gives the riders a much-needed rest, with Tuesday bringing a 145km, mostly flat run from Ravenna to Modena.
|Amla reaches ODI landmark at World Cup|
|Neymar Champions League ban appeal rejected|
|India lose batsman Dhawan for rest of World Cup campaign|
|Scholes fined £8,000 by FA over betting breaches|
|Simmons promises answers on Afghan amid apparent row with selector|
|´Out of control´ Lorenzo told to calm down after crash|
|Marquinhos urges ´team-mate and friend´ Neymar to remain at PSG|
|I´m not looking to fill LeBron´s shoes - Williamson wants to ´be the best Zion´|
|Paraguay´s Messi challenge outlined by Berizzo|
|All Blacks ace Ben Smith back and ´100 per cent´ fit|
|Warriors great Vatuvei diagnosed with brain cyst|
|Brazil can cope without Neymar - Tite defends Selecao stars|
|Tigers tie Thompson to new two-year contract|
|Thomas needs ´big training rides´ to make up for crash|
|Maradona had better Argentina team-mates than Messi, says Capello|
|2019 Africa Cup of Nations: Fit and firing Salah carries hopes of hosts Egypt|
|Rumour Has It: Neymar looks for house in Barcelona, PSG want Casemiro in possible Madrid deal|
|Scaloni: Argentina´s Copa America campaign hasn´t started yet|
|Arenado powers Rockies to win over Diamondbacks|
|Tite has no VAR complaints as Brazil booed again|
|Nats ace Scherzer breaks nose in batting practice|
|Stroman doubts long-term future is with Blue Jays|
|United States 4 Guyana 0: Defending champions cruise in Gold Cup opener|
|Platini released after questioning over Qatar World Cup bid|
|Brazil 0 Venezuela 0: Boos ring out as VAR frustrates Copa hosts|
|NBA Draft 2019: Zion Williamson and three other instant-impact picks|
|Mourinho eyes national team job|
|De Ligt shouldn´t join Man United – Gullit|
|Bolivia 1 Peru 3: Guerrero inspires Copa comeback|
|Euro U21s Review: 10-man England crumble at the end, Romania crush Croatia|
|NBA Draft 2019: Which teams have the most on the line?|
|New Zealand game like a ´quarter-final´, admits De Kock|
|Women´s World Cup Review: Marta makes history as Brazil progress, Kerr-inspired Australia cruise|
|Simeone talks up Atletico´s youth development amid Joao Felix speculation|
|Thomas cleared of serious injury after Tour de Suisse crash|
|Marta makes World Cup history with record 17th goal|
|Top seed Osaka battles into Birmingham Classic second round|
|Real Sociedad sign Portu from Girona|
|PSV would love to sign Robben – Van Bommel|
|Rodrygo can follow Vinicius´ lead at Real Madrid - Ze Roberto|
|Gasly hopes ´special´ home grand prix can prove turning point|
|Kerber through to meet Sharapova in Mallorca|
|F1 Raceweek: ´Nothing is impossible´ but Ferrari face tricky French GP|
|NBA Draft 2019: How Zion Williamson will fit with the Pelicans|
|Morgan admits record-breaking heroics beyond ´wildest dreams´|
|Liverpool winger Ojo joins Rangers on loan|
|Lyon underwhelmed by offers for Tottenham target Ndombele|
|Brazil´s Alves ruled out of Women´s World Cup|
|Nine-time champ Federer cruises through Halle opener|
|Birmingham sack Monk to protect ´long-term interests´|
|Morgan hits record 17 sixes as England trounce Afghanistan|
|Bale ´very unlikely´ to join Man United as agent rules out loan move|
|Family pleads guilty to Masters ticket scam|
|Record six hauls and the second worst ODI bowling figures - Morgan´s maximum impact|
|Argentina v Paraguay: Messi & Co. looking to get up and running in Brazil|
|Thomas crashes out of Tour de Suisse|
|Semenya criticises IAAF testing following release of CAS award|
|Rodri will be perfect fit at City, claims Milla|
|AFC Champions League Review: Guangzhou and Kashima seize initiative|
|New Zealand v South Africa: World Cup semi-final hopes at stake for Proteas|
|Platini ´absolutely confident about future´, insists lawyer|
|Six all out! - Mali Women endure record-breaking T20i thrashing|
|Rafinha given all-clear by Barcelona doctors|
|Pelicans pick up coach Gentry´s option for 2020-21|
|Celtic get Sarajevo in Champions League, Rangers learn Europa League fate|
|Rodrygo signed for Real Madrid in just 20 minutes|
|17 sixes!! Magnificent Morgan breaks ODI world record|
|Real Madrid signing Rodrygo ´one of the great prodigies´|
|Dortmund hand Favre contract extension until 2021|
|Colombia v Qatar: Queiroz building around solid defence, says Mina|