US Open finalist Ruud has also made a big jump following the run to his second major final, while Frances Tiafoe stormed his way into the Top 20 after reaching the semi-finals.
Tsitsipas climbed back to No. 5 in the ATP Rankings after he captured his first grass-court title and ninth tour-level crown overall at the Mallorca Championships.
Last week, Medvedev was in action at the Libema Open, where he marched to his second tour-level final on grass at the ATP 250 event. Meanwhile, Medvedev's rise comes after Novak Djokovic failed to defend his crown at the French Open.
Rafael Nadal has climbed to No. 4 spot in the ATP Rankings after he captured a historic 14th French Open title and record-extending 22nd Grand Slam trophy in Paris last week.
London [UK], March 21 (ANI): The 20-time Grand Slam champion Novak Djokovic regained the World No. 1 spot in the ATP rankings released on Monday despite not featuring in Indian Wells.
London [UK], February 28 (ANI): Daniil Medvedev on Monday became the 27th player to reach No. 1 in the ATP Rankings. The 26-year-old (8,615 points) passes Serbian Novak Djokovic (8,465), who has held the top spot in men's tennis for a record 361 total weeks.
Acapulco [Mexico], February 25 (ANI): Following Novak Djokovic's loss to Jiri Vesely in Dubai, Daniil Medvedev is guaranteed to reach the top spot in the ATP Rankings on Monday.
Rotterdam [Netherlands], February 10 (ANI): Three-time grand slam champion Andy Murray beats World No. 31 Alexander Bublik of Kazakhstan 7-6, 6-4 in the first round of the men's singles of the ATP 500 Rotterdam tournament on Wednesday to return to the top-100 of the ATP men's singles ranking
London [UK], January 31 (ANI): The 20-time Grand Slam champion Roger Federer has hit a 21-year-low in the latest ATP rankings published by the association on Monday.
Sydney [Australia], December 7 (ANI): The 16 countries set to compete in the third edition of the ATP Cup, which will feature 18 of the top 20 players in the ATP Rankings, were assigned to four groups at the official tournament draw on Tuesday in Australia.