Exhibit 99.CERT

                              CERTIFICATION
                              -------------

I, Peter M. Lebovitz, certify that:

1.  I have reviewed this report on Form N-CSR of Managers
    Trust I;

2.  Based on my knowledge, this report does not contain any untrue
    statement of a material fact or omit to state a material fact
    necessary to make the statements made, in light of the
    circumstances under which such statements were made, not
    misleading with respect to the period covered by this report;
    and

3.  Based on my knowledge, the financial statements, and other
    financial information included in this report, fairly present
    in all material respects the financial condition, results of
    operations, changes in net assets, and cash flows (if the
    financial statements are required to include a statement of
    cash flows) of the registrant as of, and for, the periods
    presented in this report.

Date:  May 29, 2003
       --------------
					/s/ Peter M. Lebovitz
                                        ---------------------
					Peter M. Lebovitz
					President

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                              CERTIFICATION
                              -------------

I, Galan G. Daukas, certify that:

1.  I have reviewed this report on Form N-CSR of Managers
    Trust I;

2.  Based on my knowledge, this report does not contain any untrue
    statement of a material fact or omit to state a material fact
    necessary to make the statements made, in light of the
    circumstances under which such statements were made, not
    misleading with respect to the period covered by this report;
    and

3.  Based on my knowledge, the financial statements, and other
    financial information included in this report, fairly present
    in all material respects the financial condition, results of
    operations, changes in net assets, and cash flows (if the
    financial statements are required to include a statement of
    cash flows) of the registrant as of, and for, the periods
    presented in this report.

Date:  May 29, 2003
       --------------

					/s/ Galan G. Daukas
                                        -----------------------
					Galan G. Daukas
					Chief Financial Officer