Ronaldinho scored his second goal in as many matches in the Brazilian league but Flamengo conceded a late equalizer and was held to a 3-3 draw by recently promoted Bahia.
Flamengo, Brazil's most popular club, was not able to hang on to its lead Sunday despite having a one-player advantage from the 75th minute after Bahia midfielder Helder was ejected for a second yellow card.
Young striker Jobson scored the equalizer for Bahia in the 90th, firing a low left-foot shot from inside the area at the Pituacu stadium.
Midfielder Lulinha opened the scoring for the hosts in the 16th, but Ronaldinho leveled for Flamengo from close range in the 30th. The two-time FIFA world player of the year had also scored in the team's 4-0 routing of Avai in the opener last weekend.
Jobson's first goal gave Bahia the lead in the 37th, but midfielder Dario Bottinelli equalized in the 55th and Flamengo went ahead with a goal by defender Egidio before Bahia rallied at the end.
Bahia, one of Brazil's most traditional clubs, won the 1988 Brazilian league but hadn't been in the top flight in seven years.
The late goal prevented Flamengo from being the fifth team to register two victories to start the league. Atletico Mineiro, Corinthians, Vasco da Gama and Sao Paulo have won both their opening matches.
In Rio de Janeiro, Vasco defeated recently promoted America 3-0 at Sao Januario stadium, while Corinthians edged Coritiba 2-1 in Araraquara. Vasco and Coritiba played mostly with second stringers because they will play the first leg of the Brazilian Cup final on Wednesday.
On Saturday, six-time champion Sao Paulo won with an injury-time goal by young Brazil playmaker Lucas at Morumbi stadium, while Atletico Mineiro also stayed at the top of the standings with a come-from-behind victory over struggling Avai in Florianopolis.
On Sunday, visiting Gremio beat Atletico Paranaense 1-0 in Curitiba after Atletico defender Rafael Santos' own goal.
Defending champion Fluminense edged Atletico Goianiense 1-0 in Goiania for its first win in two rounds, while eight-time champion Palmeiras drew Cruzeiro 1-1 in Minas Gerais.
Botafogo on Saturday rebounded from an opening loss to Palmeiras with a 1-0 win over Santos, which played with second stringers again because it is focused on the Copa Libertadores semifinals.
Current Copa Libertadores champion Internacional drew its league opener against Santos last weekend and on Saturday lost 1-0 at home to Ceara at the Beira-Rio stadium in Porto Alegre. Former Boca Juniors striker Iarley scored the winner for Ceara.
