London - Defending champion Novak Djokovic got his campaign for a fifth Wimbledon title off to a winning start on Monday with newly-hired coaching team recruit, and 2001 winner, Goran Ivanisevic helping steer the ship.
Djokovic, chasing a fifth title at the All England Club, saw off 35-year-old Philipp Kohlschreiber of Germany 6-3, 7-5, 6-3.
But he had to recover from early breaks in both of the first two sets against a player who beat him at Indian Wells this year, as well as a nasty fall on the Centre Court grass.
Djokovic, chasing a 16th career major, will face Denis Kudla of the United States for a place in the last 32.
If his victory was routine, there was nothing predictable about the Serb's surprise decision to bring Ivanisevic into his inner sanctum over the weekend.
Djokovic said that he and Ivanisevic have been long-time friends.
"I have always looked up to Goran. When he won here in 2001, I feel I was part of that as he had trained in Germany at the same base as me when I was 13-14," said Djokovic.
"I feel as if I contributed to his victory," he joked.
Fourth seed Kevin Anderson, runner-up to Djokovic in 2018, eased into the second round beating Pierre-Hugues Herbert of France 6-3, 6-4, 6-2.
Anderson will now play Serbia's Janko Tipsarevic who registered his first win at the tournament in seven years when he defeated Japan's Yoshihito Nishioka 6-4, 6-7 (2/7), 6-2, 5-7, 6-2.
In the women's event, third seed Karolina Pliskova made it through, beating China's Zhu Lin 6-2, 7-6 (7/4).
Czech former world number one Pliskova, fresh from winning the Eastbourne title, has never got past the fourth round at Wimbledon.
She will next face Olympic champion Monica Puig.
Slovakia's Magdalena Rybarikova, a semi-finalist in 2017, caused the first big upset of the tournament when she put out 10th seeded Aryna Sabalenka of Belarus 6-2, 6-4 in just 70 minutes.
It was Sabalenka's second successive loss in the first round
Former French Open champion Simona Halep overcame an injury scare to make the second round with a 6-4, 7-5 win over Aliaksandra Sasnovich.
Halep, seeded seven and a semi-finalist in 2014, needed to have her left ankle strapped after a worrying fall on Court One.
She then slipped at 2-5 down in the second set before recovering to beat her Belarus opponent who knocked out two-time Wimbledon champion Petra Kvitova at the same stage in 2018.
Later Monday, Japanese second seed Naomi Osaka, the US and Australian Open winner, starts her campaign against Yulia Putintseva who has a 2-0 career hold over the Japanese.
One of those wins came on grass in Birmingham less than two weeks ago.
Osaka has yet to get past the third round at Wimbledon although her two previous visits saw defeats to 2018 champion Angelique Kerber and five-time champion Venus Williams.
Venus, now 39, first played at the All England Club in 1997.
Her opponent on Court One on Monday, 15-year-old compatriot Cori Gauff was still seven years away from being born.
Gauff is the youngest player ever to have qualified for Wimbledon and comes into the tournament ranked at 313 in the world.
She needed a wild card to play in qualifying while juggling her high school tests in the evening.
"She's an exciting young player, and she's so cool," said Venus's sister Serena of Gauff.
"She's a great girl. It's a great moment for her and for Venus."
'NextGen' stars Alexander Zverev, seeded six, and seventh-seeded Stefanos Tsitsipas face Jiri Vesely of the Czech Republic and Italy's Thomas Fabbiano respectively.
Wimbledon results on Monday (x denotes seeding):
Men
1st round
Novak Djokovic (SRB x1) bt Philipp Kohlschreiber (GER) 6-3, 7-5, 6-3
Denis Kudla (USA) bt Malek Jaziri (TUN) 6-4, 6-1, 6-3
Leonardo Mayer (ARG) bt Ernests Gulbis (LAT) 6-1, 7-6 (14/12), 6-2
Félix Auger-Aliassime (CAN x19) bt Vasek Pospisil (CAN) 5-7, 6-2, 6-4, 6-3
Kevin Anderson (RSA x4) bt Pierre-Hugues Herbert (FRA) 6-3, 6-4, 6-2
Janko Tipsarevic (SRB) bt Yoshihito Nishioka (JPN) 6-4, 6-7 (2/7), 6-2, 5-7, 6-2
Andreas Seppi (ITA) bt Nicolás Jarry (CHI) 6-3, 6-7 (8/10), 6-1, 6-2
Stan Wawrinka (SUI x22) bt Ruben Bemelmans (BEL) 6-3, 6-2, 6-2
Reilly Opelka (USA) bt Cedrik-Marcel Stebe (GER) 6-3, 7-6 (7/4), 6-1
Robin Haase (NED) bt Jozef Kovalík (SVK) 6-1, 6-3, 6-1
Karen Khachanov (RUS x10) bt Soonwoo Kwon (KOR) 7-6 (8/6), 6-4, 4-6, 7-5
Feliciano Lopez (ESP) bt Marcos Giron (USA) 6-4, 6-2, 6-4
Steve Darcis (BEL) bt Mischa Zverev (GER) 6-2, 6-4, 6-4
Roberto Bautista Agut (ESP x23) bt Peter Gojowczyk (GER) 6-3, 6-2, 6-3
Women
1st round
Elina Svitolina (UKR x8) bt Daria Gavrilova (AUS) 7-5, 6-0
Margarita Gasparyan (RUS) bt Anna-Lena Friedsam (GER) 6-4, 6-4
Marie Bouzkova (CZE) bt Mona Barthel (GER) 6-3, 6-3
Maria Sakkari (GRE x31) bt Bernarda Pera (USA) 7-6 (7/4), 6-3
Petra Martic (CRO x24) bt Jennifer Brady (USA) 3-6, 6-3, 6-4
Anastasija Sevastova (LAT x12) bt Kristie Ahn (USA) 6-3, 6-4
Karolína Muchová (CZE) bt Aleksandra Krunic (SRB) 7-5, 6-2
Heather Watson (GBR) bt Caty McNally (USA) 7-6 (7/3), 6-2
Anett Kontaveit (EST x20) bt Shelby Rogers (USA) 6-0, 3-6, 6-4
Monica Puig (PUR) bt Anna Karolína Schmiedlová (SVK) 5-7, 6-4, 7-5
Karolina Pliskova (CZE x3) bt Zhu Lin (CHN) 6-2, 7-6 (7/4)
Simona Halep (ROM x7) bt Aliaksandra Sasnovich (BLR) 6-4, 7-5
Mihaela Buzarnescu (ROU) bt Jessica Pegula (USA) 6-4, 6-4
Madison Keys (USA x17) bt Luksika Kumkhum (THA) 6-3, 6-2
Polona Hercog (SLO) bt Viktoria Kuzmova (SVK) 4-6, 7-6 (7/5), 7-5
Magdalena Rybarikova (SVK) bt Aryna Sabalenka (BLR x10) 6-2, 6-4
Veronika Kudermetova (RUS) bt Ysaline Bonaventure (BEL) 6-2, 6-4
Sofia Kenin (USA x27) bt Astra Sharma (AUS) 6-4, 6-2
Dayana Yastremska (UKR) bt Camila Giorgi (ITA) 6-3, 6-3
Viktorija Golubic (SUI) bt Iga Swiatek (POL) 6-2, 7-6 (7/3)